# 吱吱 vs Doc Prod

The clearest difference is in-app purchases: 吱吱 at none against Doc Prod's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Doc Prod sells 2 in-app purchases, starting at $4.99 per 7 days. 吱吱 asks for nothing beyond the download.

吱吱 ships an update fortnightly, Doc Prod monthly. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 吱吱 | Doc Prod |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Size | 204 MB | 3 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Chengdu Zhizhi Technology Company Limited](https://appshunter.io/developer/1700381062) | [HONGKONG BANCHUAN CATERING CHAIN MANAGEMENT CO., LIMITED](https://appshunter.io/developer/1696084736) |

## What reviewers say

### 吱吱

[App page](https://appshunter.io/ios/app/id6456266126)

**Features:** macOS Compatibility

**In-app purchases:** none


### Doc Prod

[App page](https://appshunter.io/ios/app/doc-prod-activity-tracker/id6758373153)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Advantage | $4.99 | per 7 days |
| Yearly Advantage | $39.99 | per year |


## Frequently asked questions

### Is 吱吱 free?

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

### Is Doc Prod free?

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

### Do 吱吱 or Doc Prod have ads?

Neither 吱吱 nor Doc Prod shows ads.

### Which is updated more often, 吱吱 or Doc Prod?

吱吱 ships an update fortnightly, and Doc Prod monthly. Most recently, 吱吱 was updated on October 27, 2026 and Doc Prod on October 31, 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.*