# 铁算盘 vs O

The clearest difference is review sentiment: O at 100% against 铁算盘's 20%. O also leads on price (Free vs $3.99) and update cadence (every 5 days vs every 52 months). 铁算盘's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.0). On ads and in-app purchases there is nothing between them.

O is free to download; 铁算盘 costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

铁算盘 ships an update every 52 months, O every 5 days. The most recent releases landed on October 23, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | 铁算盘 | O |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/o-origin/id6803718541/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 20.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 52 months | **Every 5 days** |
| Monetization | — | Free |
| Size | 10 MB | 163 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [三亚琼澜天顶科技有限公司](https://appshunter.io/developer/1887583109) | [TEACHERGO CORP](https://appshunter.io/developer/1796727217) |

## What reviewers say

### 铁算盘

[App page](https://appshunter.io/ios/app/id535516205)

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

**In-app purchases:** none


### O

[App page](https://appshunter.io/ios/app/o-origin/id6803718541)

This app uses haptic feedback and acoustic experiences to help manage stress and neural tension. It offers a dual-mode regulation experience through simple tap-and-hold interactions for relaxation and self-awareness.

**Highlights:** Dual-mode neuromodulation, Haptic micro-vibrations, Frequency-based acoustic experiences, Non-invasive digital experience, Quantified awareness tracking, AI conversation companion

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

**In-app purchases:** none


## Frequently asked questions

### Is 铁算盘 free?

铁算盘 costs $3.99, with no in-app purchases.

### Is O free?

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

### Do 铁算盘 or O have ads?

Neither 铁算盘 nor O shows ads.

### Which is updated more often, 铁算盘 or O?

铁算盘 ships an update every 52 months, and O every 5 days. Most recently, 铁算盘 was updated on October 23, 2026 and O 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.*