# InversionLetter vs mysta(マイスタ)

The clearest difference is rating: mysta(マイスタ) at 2.0 against InversionLetter's 1.0. mysta(マイスタ) also leads on update cadence (every 3 weeks vs every 17 months) and review sentiment (37% vs 15%). InversionLetter's advantage is in-app purchases (none vs 17) and iOS requirement (10.3 vs 14.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. mysta(マイスタ) sells 17 one-off in-app purchases. InversionLetter asks for nothing beyond the download.

mysta(マイスタ) holds the better App Store score, 2.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 15% of InversionLetter's written reviews are positive against 37% of mysta(マイスタ)'s.

InversionLetter ships an update every 17 months, mysta(マイスタ) every 3 weeks. The most recent releases landed on October 13, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | InversionLetter | mysta(マイスタ) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/inversionletter/id970949034/reviews) | **[2.0 (1 ratings)](https://appshunter.io/ios/app/mysta/id1317688414/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 15.0% of reviews | **37.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 17 months | **Every 3 weeks** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 26 MB | 144 MB |
| Requires iOS | **10.3** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [EIICHI KOMINE](https://appshunter.io/developer/495643581) | [mysta Corp.](https://appshunter.io/developer/1317688413) |

## What reviewers say

### InversionLetter

[App page](https://appshunter.io/ios/app/inversionletter/id970949034)

This app allows users to invert and rotate text messages, then send them as images via email. It offers options to change characters, tilt, and invert text, with various font choices.

**Highlights:** Invert characters, Rotate text, Send as image via email, Change characters, Tilt and invert options, Font selection

**Features:** Vision Pro support

**In-app purchases:** none


### mysta(マイスタ)

[App page](https://appshunter.io/ios/app/mysta/id1317688414)

Watch daily videos from rising idols, comedians, and singers. Engage with talent through comments and support them to help them climb the rankings for more opportunities. Access exclusive content and interact with your favorite entertainers.

**Highlights:** Daily entertainment videos, Real-time fan communication, Talent ranking system, Support talent with items, Watch videos without registration

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

**In-app purchases (17)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 260コイン | $1.99 | one-time |
| 520コイン | $1.99 | one-time |
| 540コイン | $3.99 | one-time |
| 1080コイン | $3.99 | one-time |
| 680コイン(キャンペーン中) | $4.99 | one-time |
| 830コイン | $5.99 | one-time |
| 1660コイン | $5.99 | one-time |
| 3240コイン | $9.99 | one-time |
| 1620コイン | $11.99 | one-time |
| 3120コイン(キャンペーン中) | $17.99 | one-time |
| 3330コイン | $19.99 | one-time |
| 6660コイン | $19.99 | one-time |
| 18660コイン | $49.99 | one-time |
| 9330コイン | $59.99 | one-time |
| 18420コイン(キャンペーン中) | $79.99 | one-time |
| 18330コイン | $99.99 | one-time |
| 36660コイン | $99.99 | one-time |


## Frequently asked questions

### Is InversionLetter free?

InversionLetter is free to download, with no in-app purchases.

### Is mysta(マイスタ) free?

mysta(マイスタ) is free to download, with in-app purchases available.

### Which has better reviews, InversionLetter or mysta(マイスタ)?

mysta(マイスタ) is rated higher. InversionLetter averages 1.0 out of 5 from 1 ratings, while mysta(マイスタ) averages 2.0 from 1 ratings.

### Do InversionLetter or mysta(マイスタ) have ads?

Both InversionLetter and mysta(マイスタ) show ads.

### Which is updated more often, InversionLetter or mysta(マイスタ)?

InversionLetter ships an update every 17 months, and mysta(マイスタ) every 3 weeks. Most recently, InversionLetter was updated on October 13, 2026 and mysta(マイスタ) on October 19, 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.*