# Rainbow vs MailTime

Rainbow and MailTime both sit at 3.6 stars, but that hides the real split: 60% of MailTime's written reviews are positive against 20% of Rainbow's. MailTime also leads on update cadence (fortnightly vs every 2 months) and ratings volume (97 vs 5). Rainbow's advantage is device support (3 vs 1) and iOS requirement (11.0 vs 16.0). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Rainbow sells 9 one-off in-app purchases and MailTime sells 5 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 3.6 for Rainbow against 3.7 for MailTime. That said, the two scores are not equally well evidenced: MailTime has 97 ratings behind it against 5, so its average is the more settled of the two. Written reviews are what separate them: 20% of Rainbow's written reviews are positive against 60% of MailTime's.

Rainbow ships an update every 2 months, MailTime fortnightly. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Rainbow | MailTime |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (5 ratings)](https://appshunter.io/ios/app/rainbow-best-cloud-storage-app/id531874282/reviews) | **[3.7 (97 ratings)](https://appshunter.io/ios/app/mailtime-ai-email-inbox/id914281815/reviews)** |
| Number of ratings | 5 | **97** |
| Positive reviews | 20.3% of reviews | **59.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 31 MB | 121 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [i-SmartSolutions](https://appshunter.io/developer/391390898) | [MailTime](https://appshunter.io/developer/914281818) |

## What reviewers say

### Rainbow

[App page](https://appshunter.io/ios/app/rainbow-best-cloud-storage-app/id531874282)

Unify all your cloud storage into one accessible account. Upload large files, sync folders across different services, and back up data seamlessly. Share files easily with secure links and search across all connected clouds.

**Highlights:** Combine multiple cloud accounts, Sync folders across accounts, Backup data between accounts, Share files with secure links, Search across all linked clouds, Passcode protection for data, Drag & Drop file management

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 month subscription | $0.99 | one-time |
| SmartCloud for 1 month | $0.99 | one-time |
| Enable simultaneous transferring of files from multi accounts | $1.99 | one-time |
| Remove Ads | $2.99 | one-time |
| Share files for 1 month | $2.99 | one-time |
| Subscribe for 6 months | $4.99 | one-time |
| SmartCloud for 1 year | $6.99 | one-time |
| Subscribe for a year | $9.99 | one-time |
| Share files for 1 year | $27.99 | one-time |

**What reviewers like**

- 💡 Great concept for cloud management
- 🚀 Efficient file transferring between clouds
- 👍 Easy to use once familiar
- 👍 Exactly what users needed
- 👍 Works with multiple cloud services

**What reviewers complain about**

- 🐛 Crashes frequently
- 🐛 Unstable and buggy
- 🐛 UI is unintuitive and ugly
- 🐛 Not user-friendly interface
- 🐛 Limited functionality

**Reported bugs**

- Crashes when transferring or backing up files
- Crashes when setting up Google Drive
- Crashes when adding SkyDrive
- Signs out of all cloud services after crash
- Cannot make sense of the interface

**Requested features**

- Hide unused cloud services
- Progress bar for transfers
- Background transfer processing
- Password protection to prevent app use
- Mac version of the app


### MailTime

[App page](https://appshunter.io/ios/app/mailtime-ai-email-inbox/id914281815)

This app transforms your email inbox into a streamlined, chat-like experience. It integrates multiple email accounts and uses AI to help you draft replies, proofread messages, and manage conversations efficiently. Enjoy a clutter-free inbox and communicate as easily as sending a text message.

**Highlights:** SMS-style email conversations, AI-powered email replies, Proofread, shorten, expand messages, Group chat-like email management, Integrates multiple email accounts, Secure and ad-free interface

**Features:** macOS Compatibility, iMessage stickers, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Monthly Subscription | $0.99 | per month |
| AI Yearly Subscription | $4.99 | per year |
| One MailTime account | $0.99 | one-time |
| 20 MailTime AI Credits | $0.99 | one-time |
| 100 MailTime AI Credits | $0.99 | one-time |

**What reviewers like**

- 🚀 Fast and smooth
- 👍 Intuitive and user-friendly interface
- 💡 Innovative email-as-chat concept
- 🚀 Efficient email management

**What reviewers complain about**

- 🐛 Crashes and freezes
- 🔌 Slow sync and update issues
- 🔒 Concerns about data privacy and security
- 📤 Limited email account support

**Reported bugs**

- Frequent crashes on iPhone 6 and older devices
- Inability to log in to certain email accounts
- Sync issues causing missed or delayed notifications

**Requested features**

- Support for more email providers (e.g., Naver, Daum)
- Ability to organize emails into folders
- Option to customize notification sounds
- Improved search and archiving functionality


## Frequently asked questions

### Is Rainbow free?

Rainbow is free to download, with in-app purchases available.

### Is MailTime free?

MailTime is free to download, with in-app purchases available.

### Which has better reviews, Rainbow or MailTime?

MailTime is rated higher. Rainbow averages 3.6 out of 5 from 5 ratings, while MailTime averages 3.7 from 97 ratings.

### Do Rainbow or MailTime have ads?

Neither Rainbow nor MailTime shows ads.

### Which is updated more often, Rainbow or MailTime?

Rainbow ships an update every 2 months, and MailTime fortnightly. Most recently, Rainbow was updated on November 1, 2026 and MailTime on October 29, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*