# String Tension AI vs StringPing

The clearest difference is update cadence: StringPing at daily against String Tension AI's every 4 days. String Tension AI's advantage is iOS requirement (17.0 vs 26.5). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. String Tension AI sells 3 in-app purchases, starting at $4.99 per month and StringPing sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

String Tension AI ships an update every 4 days, StringPing daily. The most recent releases landed on October 14, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | String Tension AI | StringPing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/string-tension-ai-tennis/id6763697805/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | **Daily** |
| Monetization | Freemium | — |
| Size | 83 MB | 6 MB |
| Requires iOS | **17.0** | 26.5 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Trader Prosperity LLC](https://appshunter.io/developer/1895443729) | [Korhan Pekun](https://appshunter.io/developer/6811897935) |

## What reviewers say

### String Tension AI

[App page](https://appshunter.io/ios/app/string-tension-ai-tennis/id6763697805)

This app uses your iPhone's microphone to measure the tension of your racquet strings. It tracks tension decay over time, offers personalized restring recommendations, and provides a comprehensive string toolkit for serious players.

**Highlights:** Measure string tension with iPhone microphone, Track tension decay over time, Personalized restring recommendations, String database and player setups, Playing session tracking, Cost tracking for restringing

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly PRO | $4.99 | per month |
| Annual PRO | $29.99 | per year |
| Lifetime PRO | $69.99 | one-time |


### StringPing

[App page](https://appshunter.io/ios/app/stringping/id6811897693)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Overgrip | $1.99 | one-time |
| Can of Tennis Balls | $4.99 | one-time |
| Set of Strings | $9.99 | one-time |
| Reel of String | $19.99 | one-time |


## Frequently asked questions

### Is String Tension AI free?

String Tension AI is free to download, with in-app purchases available.

### Is StringPing free?

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

### Do String Tension AI or StringPing have ads?

Neither String Tension AI nor StringPing shows ads.

### Which is updated more often, String Tension AI or StringPing?

String Tension AI ships an update every 4 days, and StringPing daily. Most recently, String Tension AI was updated on October 14, 2026 and StringPing on October 9, 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.*