# Histotime | 不定期な記録管理 vs Vertigo Log

The clearest difference is ads: Vertigo Log at none against Histotime | 不定期な記録管理's shown. Vertigo Log also leads on update cadence (every 10 days vs every 3 weeks). Histotime | 不定期な記録管理's advantage is review sentiment (100% vs 67%) and device support (3 vs 1). On price, in-app purchases, monetization model and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Histotime | 不定期な記録管理 ships an update every 3 weeks, Vertigo Log every 10 days. The most recent releases landed on November 4, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | Histotime | 不定期な記録管理 | Vertigo Log |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **100.0% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 66 MB | 4 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ITSolutionZ Inc.](https://appshunter.io/developer/1625041772) | [Yoshifumi Sato](https://appshunter.io/developer/6780413827) |

## What reviewers say

### Histotime | 不定期な記録管理

[App page](https://appshunter.io/ios/app/histotime/id6733235215)

This app allows you to easily record infrequent actions and events as they happen, like taking medication or experiencing health changes. Organize your entries by folder and review them on a calendar to track intervals and past occurrences. It's designed for those who need to remember specific, irregular events without the commitment of daily tracking.

**Highlights:** Record infrequent actions and events, One-tap recording, Organize records by folder, Calendar view for daily records, Track intervals between events, Review past occurrences

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


### Vertigo Log

[App page](https://appshunter.io/ios/app/vertigo-log-dizziness-diary/id6784697218)

Easily log vertigo and dizziness attacks with one-tap start and simple severity selection. Track symptoms, triggers, medications, and barometric pressure. View trends and compare pressure history with your logged events.

**Highlights:** One-tap attack logging, Lock Screen and Siri integration, Detailed symptom and trigger tracking, Medication logging, Barometric pressure tracking, Attack-free day tracking, Trend analysis

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

**In-app purchases:** none


## Frequently asked questions

### Is Histotime | 不定期な記録管理 free?

Histotime | 不定期な記録管理 is free to download, with no in-app purchases.

### Is Vertigo Log free?

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

### Do Histotime | 不定期な記録管理 or Vertigo Log have ads?

Histotime | 不定期な記録管理 shows ads; Vertigo Log does not.

### Which is updated more often, Histotime | 不定期な記録管理 or Vertigo Log?

Histotime | 不定期な記録管理 ships an update every 3 weeks, and Vertigo Log every 10 days. Most recently, Histotime | 不定期な記録管理 was updated on November 4, 2026 and Vertigo Log on November 12, 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.*