# HDLC vs GymLog

The clearest difference is update cadence: GymLog at every 8 days against HDLC's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. HDLC sells 5 in-app purchases, starting at $0.99 per month and GymLog sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

HDLC ships an update every 3 weeks, GymLog every 8 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | HDLC | GymLog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 8 days** |
| Size | 70 MB | 17 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [玉钊 蓝](https://appshunter.io/developer/1822284648) | [宏策 麻](https://appshunter.io/developer/1889711782) |

## What reviewers say

### HDLC

[App page](https://appshunter.io/ios/app/hdlc-personalized-data-center/id6747672905)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1个月会员订阅 | $0.99 | per month |
| 3个月会员订阅 | $1.99 | per 3 months |
| 6个月会员订阅 | $3.99 | per 6 months |
| 12个月会员订阅 | $7.99 | per year |
| 永久会员 | $19.99 | one-time |


### GymLog

[App page](https://appshunter.io/ios/app/gymlog/id6761462208)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GymLog 完整版 | $2.99 | one-time |


## Frequently asked questions

### Is HDLC free?

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

### Is GymLog free?

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

### Do HDLC or GymLog have ads?

Neither HDLC nor GymLog shows ads.

### Which is updated more often, HDLC or GymLog?

HDLC ships an update every 3 weeks, and GymLog every 8 days. Most recently, HDLC was updated on November 5, 2026 and GymLog 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.*