# SilentLog vs AutoDiary+

The clearest difference is review sentiment: AutoDiary+ at 71% against SilentLog's 41%. SilentLog's advantage is update cadence (every 4 weeks vs every 2 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. SilentLog sells 3 one-off in-app purchases and AutoDiary+ sells 3 in-app purchases, starting at $2.49 per month. Whichever you choose, the download price is not the number that matters.

SilentLog ships an update every 4 weeks, AutoDiary+ every 2 months. The most recent releases landed on September 21, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | SilentLog | AutoDiary+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (37 ratings)](https://appshunter.io/ios/app/silentlog/id901679160/reviews)** | — |
| Number of ratings | **37** | — |
| Positive reviews | 40.9% of reviews | **71.4% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 111 MB | 58 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rei-Frontier Inc.](https://appshunter.io/developer/341747801) | [Writeback Co.,Ltd.](https://appshunter.io/developer/382508339) |

## What reviewers say

### SilentLog

[App page](https://appshunter.io/ios/app/silentlog/id901679160)

Automatically log your daily movements and add photos to create a visual diary of your life. Track steps, distance, and routes, and revisit memories like a photo album. Perfect for personal journaling, travel logs, or tracking family milestones.

**Highlights:** Automatic step and distance tracking, Add photos to log entries, Create a visual diary of memories, Pedometer functionality, Route and time measurement, Apple Watch support, 3D Touch integration

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 30days | $2.99 | one-time |
| 90days | $4.99 | one-time |
| 1 year | $22.99 | one-time |


### AutoDiary+

[App page](https://appshunter.io/ios/app/autodiary-plus/id1478718334)

This app helps you track your movements, recording where and when you go. Add notes, photos, and voice memos to locations, and analyze your time spent at different places with detailed graphs. It also monitors data usage and battery life, with optional integration for step counting.

**Highlights:** Location tracking with timestamps, Add photos, notes, and voice memos, Movement analysis and daily/monthly graphs, Mobile data and battery usage monitoring, Step counting integration with iPhone Health, Power-efficient GPS usage

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 自動計測-延長１ヶ月間 | $2.49 | per month |
| 自動計測-延長半年間 | $11.99 | per 6 months |
| 自動計測-延長１年間 | $20.49 | per year |


## Frequently asked questions

### Is SilentLog free?

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

### Is AutoDiary+ free?

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

### Do SilentLog or AutoDiary+ have ads?

Neither SilentLog nor AutoDiary+ shows ads.

### Which is updated more often, SilentLog or AutoDiary+?

SilentLog ships an update every 4 weeks, and AutoDiary+ every 2 months. Most recently, SilentLog was updated on September 21, 2026 and AutoDiary+ on September 22, 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.*