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Updated July 2026 · real, multi-region App Store reviews
Head-to-head

Microsoft 365 Copilot vs Grok AI

Microsoft 365 Copilot 4.7★ · Free + IAP 70
Winner Microsoft 365 Copilot
Grok AI 4.9★ · Free to download 55

Microsoft 365 Copilot is better for users seeking an AI integrated with productivity tools, despite its current integration issues, while Grok AI is better for general AI tasks but is severely hampered by restrictive usage limits and high subscription costs.

Full reviews: Microsoft 365 Copilot · Grok AI

Microsoft 365 Copilot excels in integration with existing Microsoft 365 apps and offers a free tier, though users report issues with its functionality and accuracy. Grok AI, while praised for its intelligence and utility, faces significant criticism for its restrictive usage limits, even for paid subscribers, and high cost.

Head to head

Features and Functionality tieR2R3R7R9
Microsoft 365 Copilot Microsoft 365 Copilot is praised for its ability to assist with everyday tasks, research, and writing, with some users finding it revolutionary and a great productivity assistant R2. However, many users report it's still missing features, can be inaccurate, and sometimes messes up documents R3R9R18. There are also complaints about its inability to understand corporate structures or perform specific searches R7.
Grok AI Grok AI is considered intelligent and helpful for a wide range of tasks, from daily organization to complex legal filings and creative generation . Users appreciate its ability to condense information and provide references . However, it's criticized for being inaccurate at times, having issues with image generation moderation, and lacking automation capabilities R79.
Ease of Use and Integration tieR1R6R9R10
Microsoft 365 Copilot Microsoft 365 Copilot faces significant criticism for its integration, as it has transformed the Microsoft 365 app from a 'one-stop shop' for documents into a disconnected AI tool R1R10R51. Users struggle to access files and documents, with some reporting the need for multiple apps for tasks previously done in one R49R51. The user interface is described as buggy and rushed, with issues like automatic scrolling and clunky autocorrect R9R33. Some users also find it difficult to use and lack tutorials R6.
Grok AI Grok AI generally has a user-friendly UI, especially for image and video generation . However, users report frequent app crashes, issues with the AI remembering previous interactions, and problems with starting new projects on the mobile app . There are also complaints about the app not being fully compatible with X, despite paying for Grok .
Reliability and Performance edge: Microsoft 365 CopilotR3R4R12R18
Microsoft 365 Copilot Microsoft 365 Copilot's reliability is mixed. While some users find it helpful and improving with updates, others report it being glitchy, forgetting instructions, making basic mistakes, and even lying R3R4R12R18. Issues include documents not syncing, loss of work, and the AI providing incorrect information .
Grok AI Grok AI suffers from significant reliability issues, particularly concerning usage limits that reset incorrectly or are consumed too quickly R61R63R70. Users also report that the AI can be inaccurate, crash frequently, and lose data or prompts .
Price and Value edge: Microsoft 365 CopilotR22R40R61R63
Microsoft 365 Copilot Microsoft 365 Copilot is available as a free app with in-app purchases, but some users who pay for Microsoft 365 subscriptions report issues with the app acknowledging their purchase, preventing them from using it R22. There are also complaints about being forced to purchase the app to fill in forms, only to find no options to do so R40.
Grok AI Grok AI is criticized for its high cost and poor value, with a $30/month subscription R70R79. Users feel the paid tiers, including 'Super Grok', are misleading as they still impose severe and frequently reduced usage limits, making the service feel like a free tier R61R63. The free version is considered almost worthless due to insufficient chat time R99R100R107.
Support and User Experience edge: Microsoft 365 CopilotR19R31R33R72
Microsoft 365 Copilot Microsoft 365 Copilot users report difficulties finding feedback options within the app R33. There are also complaints about excessive login requirements R19R31.
Grok AI Grok AI users report non-existent tech support, even for paid subscribers . Many users express frustration with the app's moderation policies, especially for image generation, and perceived political bias R72R79. There are also claims of reviews being taken down R100.
Pick Microsoft 365 Copilot if

You are heavily invested in the Microsoft 365 ecosystem and want an AI assistant integrated with your productivity tools, and are willing to tolerate some current integration and functionality quirks R1R10.

Pick Grok AI if

You are looking for a powerful AI for general conversation, creative tasks, and information retrieval, and are willing to pay a premium despite significant usage limitations and potential accuracy issues .

Evidence note: Grok AI's reviews are heavily skewed negative due to recent changes in its subscription model and usage limits, which directly impact user satisfaction even for those who initially loved the app R61R63. Microsoft 365 Copilot's negativity often stems from the disruption of its previous functionality as a document hub R1R10R51.

Frequently asked

Is Grok AI worth the subscription?
Based on recent reviews, many users feel Grok AI's $30/month subscription is not worth it due to extremely restrictive weekly usage limits, even for paid tiers like 'Super Grok', and the frequent need to purchase additional 'credits' R70R79R97R115.
Can I use Microsoft 365 Copilot to manage my documents?
While Microsoft 365 Copilot is integrated with Microsoft 365, many users report that the app has become less functional for document management, making it difficult to access, edit, and save files, sometimes requiring multiple separate apps for tasks previously done in one R1R10R49R51.
Does Grok AI have a free version?
Grok AI is free to download, but its free version is widely considered 'almost worthless' due to extremely limited chat time and functionality, pushing users towards paid subscriptions R84R99R100R107.

What reviewers actually said

Built only from these 120 real reviews (foreign ones translated). Superscripts jump to the quote here. Apple has no per-review links, so [ref] opens that app's reviews on the App Store.

  1. [R2] Microsoft 365 Copilot 5/5 · US Revolutionary: Increased MY quality!
  2. [R3] Microsoft 365 Copilot 3/5 · US A bit behind…: 1. Model seems to be behind on docs. Answers are two-to-three versions ago. 2. When giving solutions, it blasts you with too many solution paths. Needs to be more stepwise.
  3. [R7] Microsoft 365 Copilot 2/5 · US Not customized to corporate structure: Still needs to be trained on corporate structure and the lack of database organization by verticals. If you ask it who is the leader of a project, or admin of group, it cannot determine this. If you ask it a simple who is the boss of this vertical it can answer. That is not useful… The ability to search by project, expertise, admin roles, everything not liste
  4. [R9] Microsoft 365 Copilot 3/5 · US Still missing so many features: Still missing so many features but I appreciate you all getting this beta out. One bug I keep experiencing is that when viewing a chat it keeps scrolling to the top automatically.
  5. [R1] Microsoft 365 Copilot 2/5 · US What’s Going On?: Remember when Microsoft 365 was actually functional? Before Copilot took over completely? Don’t get me wrong, I use Copilot, a lot…but there’s a specific app for that. I liked Microsoft 365 so I had one stop to open, edit, save documents in my OneDrive without having to download each individual app on my phone. Now this is too integrated and not functional. Sometimes keeping it
  6. [R6] Microsoft 365 Copilot 3/5 · US Why is this here?: I have no idea how to use this!
  7. [R10] Microsoft 365 Copilot 1/5 · US What is this garbage?: This app used to be a one stop shop for all of my documents in OneDrive. It was convenient for use on an iPhone (since I didn’t want all those apps here). Now it’s a disconnected version of their CoPilot app. I.e. None of the existing CoPilot history appears to be accessible here. tl;dr. This is garbage and if allowed, I would rate it a 0.
  8. [R4] Microsoft 365 Copilot 1/5 · US By far the dumbest AI: Constantly forget instructions, makes basic mistakes and even lies at time! Don’t ask it anything more than proofreading things or translations. Honestly Microsoft should pay us to use this joke of an AI.
  9. [R12] Microsoft 365 Copilot 3/5 · US Getting better: Was glitchy the first time I used it and didnt really get the task or made me repeat what was asked as if I didnt ask. Its much better now since the update and looking forward to the future advancements it will bring.
  10. [R18] Microsoft 365 Copilot 3/5 · US Copilot: Sometimes copilot is great! But other times copilot messes up my document so badly that I have to start over and fix the mess. One time copilot reworded everything in a way that was completely wrong and another time I asked copilot to put in bullets exactly as the highlighted example I gave and copilot did then opposite!!
  11. [R22] Microsoft 365 Copilot 1/5 · US Utter garbage: I pay monthly for 365 but this garbage app doesn’t acknowledge my purchase, so I can’t use it.
  12. [R40] Microsoft 365 Copilot 1/5 · US Can’t figure out how to fill in documents: Made me purchase app to fill in important forms and it gives me no options to fill in the data
  13. [R61] Grok AI 2/5 · US Trial is scummy: Decided to do the free trial and gens are still limited not limited like the free version, but still limited. I cancelled the trial the same day as you won’t even get the full three days because you get hit with a weekly cooldown, rendering it absolutely useless. This should not be a thing especially if you’re on a trial period or even a paying customer if I decided to actually, s
  14. [R63] Grok AI 3/5 · US Thought it was the best: The recent update now adds a time usage for the week so even when you pay for a subscription you can’t use it fully when it ends great way to scam their consumers
  15. [R19] Microsoft 365 Copilot 1/5 · US Too much login: I always need to go through the complete login process just to ask a frivolous question like whether a movie is based on a book. I’ll go back to google.
  16. [R31] Microsoft 365 Copilot 1/5 · US Terrible: Too many sig ins
  17. [R33] Microsoft 365 Copilot 3/5 · GB I like it but...: The lastest version has started hiding parts of answers in little popups that are really awkward and stifle reading flow. Please go back to having the whole answer in-line. It was a 5 but now it's a 3 because it's no longer better than my desktop. (I couldn't find anywhere for feedback in the app so I'm writing here)
  18. [R72] Grok AI 3/5 · US Grok Democratic bias: Many subjects including Court rulings options Grok kept double down on being right until I brought up Judge Kavanaugh decent then instant 180. Grok always attacked the information except for the Democrats narratives then the person is attacked by Grok example McCarthyism Grok attacked person with no reference to Venona then Grok discounted in favor of the Democrats narrative
  19. [R70] Grok AI 1/5 · US $30/Month, Constant Limits 👎🏻: $30/month shouldn’t come with such restrictive chat limits. I hit the limit far too quickly. This subscription no longer feels like a premium service. I do not recommend at all!
  20. [R79] Grok AI 1/5 · US Not worth the subscription anymore: The AI has gotten dumber, the “weekly limit” was the worst possible thing they could have implemented. Because if you run out, you can buy “credits” or whatever. Just greedy. Image generations are WAY too heavily moderated. Even completely innocent prompts get flagged! Wtf. Supergrok now feels like the free tier. Imagine paying $30 a month to still get a limit f
  21. [R97] Grok AI 1/5 · US Extremely Limited: Usage runs out extremely too fast even with $30 subscription. Waste of money.
  22. [R115] Grok AI 1/5 · US This is now a scam. DO NOT USE!: As of July 2026 they have switched from a daily quota limit for paid subscriptions over to a weekly quota and it is EXTREMELY restricted to the point that I used my entire quota for this week in a single one and half hour session. When you’ve met you limit you can pay for more “credits” but they are expensive as hell and it does not tell you how much more time/usag
  23. [R49] Microsoft 365 Copilot 1/5 · US It sucks: How do I access my apps and files?
  24. [R51] Microsoft 365 Copilot 1/5 · US Slop generator: This app was formerly the way I could access my PowerPoints and Word documents for work and presentations, and now it does nothing but scrape my data, chugs battery life, and tries to shove AI down my throat. I can't access any of my files easily anymore, and to open/view my files I need to have at least 4 (!?) other apps installed for the same tasks I used to do. AI is garbage, an
  25. [R84] Grok AI 3/5 · US How it could be better: Would be better if it had free unlimited access
  26. [R99] Grok AI 3/5 · GB Unfortunate: Although I understand that these things cost to create and run I also cannot justify the expense that comes with signing up and the free version is almost worthless as you don’t get enough time to chat
  27. [R100] Grok AI 1/5 · US Terrible: This app is genuinely terrible. The plans are way too expensive. And the free sucks as it can only use fast, and that gets facts wrong and pretty much just agrees with whatever you were saying, also, my last review got taken down. What the heck grok. They review bomb themselves with positive reviews, so don’t be fooled
  28. [R107] Grok AI 5/5 · US Best ai but: Good ai but for free users they should give way more time to chat

Synthesized from 120 recent App Store reviews · updated July 2026 · View on the App Store