nandeyanen vs InversionLetter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
nandeyanen
This entertainment app features a unique Japanese phrase that is triggered by shaking or touching your device. It offers a simple, interactive experience for users interested in Japanese culture.
- Shake and touch interaction
- Plays "nandeyanen" phrase
- Japanese cultural element
- Simple interface
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shake and touch iphone or ipad, rings with the "nandeyanen" in japanese.
InversionLetter
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.
- Invert characters
- Rotate text
- Send as image via email
- Change characters
- Tilt and invert options
- Font selection
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You can invert the entered characters , and can rotate. You can send by e-mail as an image . [ Operation ] Q: I want to change the previously entered characters A: Select the character you want change, you can change at each button . ( Tilt and inversion , fonts can be changed )
Screenshots
Verdict
The clearest difference is review sentiment: nandeyanen at 58% against InversionLetter's 15%. nandeyanen also leads on rating (2.0 vs 1.0) and ratings volume (5 vs 1). InversionLetter's advantage is iOS requirement (10.3 vs 12.0). On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
nandeyanen holds the better App Store score, 2.0 against 1.0. That said, the two scores are not equally well evidenced: nandeyanen has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 58% of nandeyanen's written reviews are positive against 15% of InversionLetter's.
nandeyanen ships an update every 16 months, InversionLetter every 17 months. Both last shipped on November 1, 2026.
| Parameter | nandeyanen | InversionLetter |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (5 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 58.0% of reviews — better | 15.0% of reviews |
| Number of ratings | 5 — better | 1 |
| Update frequency | Every 16 months — better | Every 17 months |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 | 10.3 — better |
| Further details — not scored | ||
| Size | 39 MB | 26 MB |
| Age rating | 12+ | 4+ |
| Developer | OMOSHIRO KAKUMEI CAPSULE PLUS, K.K. | EIICHI KOMINE |
Customer experience
nandeyanen
InversionLetter
In-app purchases
nandeyanen
No in-app purchases
InversionLetter
No in-app purchases
