# shikakuLog: Cert & Exam Log — License renewals & study time

> License renewals & study time (iPhone/iPad app by Ryota Ogiwara.)

- Source: https://appshunter.io/ios/app/shikakulog-cert-and-exam-log/id6789401366 (this page in markdown: same URL + `.md`)
- Developer: [Ryota Ogiwara](https://appshunter.io/developer/6789401368)
- Category: Productivity, Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.1 · 42 MB
- Languages: American English, Japanese
- Released: 2026-07-22
- Data updated: 2026-10-02

## What is shikakuLog?

shikakuLog is a simple, beautiful app for tracking your certifications.

"When does that license expire?"
"How many days until my next exam?"

shikakuLog answers at a glance — with a clean, minimal design.

◆ Key Features

[Everything at a glance]
- Home cards for earned, studying, expiring, and upcoming exams
- Certs with approaching deadlines are listed automatically

[Add certs in seconds]
- Pick from 170+ popular certifications — IT, business, finance, and more
- Manual entry supported
- Input fields adapt to each status (studying / exam scheduled / earned)
- Free plan includes up to 10 certifications

[Stay motivated]
- Days-since-you-started counter
- Exam day countdown
- Lock Screen widget with your goal and countdown (Premium)

[Look back on your effort]
- Calendar view for exam days and daily study logs (Premium)
- Study heatmap showing 18 weeks of activity at a glance (Premium)
- Weekly study time and totals by certification (Premium)

[Never miss a deadline]
- Reminders ahead of time, the day before, and on the day of exams and expirations
- Turn reminders on or off for each certification
- Set the lead time and reminder time for each certification (Premium)
- Choose your notification time and toggle each type

[Your data stays yours]
- Everything is stored on your device (no account needed, works offline)
- Export / import for device transfers
- Your certification and study data is never sent to external servers
- No ads — ever

[Design]
- Minimal design with room to breathe
- Dark Mode, or Auto to match your device (Premium)

◆ Perfect for

- Anyone who wants their certifications organized in one place
- Tracking renewal deadlines across multiple licenses
- Staying motivated while studying for the next exam
- Career changers building their credentials

Simple enough to open every day.
Start tracking with shikakuLog.

Terms of Use: https://ogilab-apps.github.io/shikakulog-support/terms-en.html
Privacy Policy: https://ogilab-apps.github.io/shikakulog-support/privacy-en.html

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Premium (Monthly) | $1.99 | per month |
| Premium (Yearly) | $5.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Premium (Lifetime) | $9.99 | one-time |


## Is shikakuLog safe?

Not enough ratings yet to assess shikakuLog.

## Is shikakuLog legit?

shikakuLog: Cert & Exam Log appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for shikakuLog is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.3.0 — 2026-10-02

Reminders, now set per certification.

• Turn reminders on or off for each certification
• Choose how many days ahead to be reminded — anywhere from 2 to 365 days (Premium). You'll still be reminded the day before and on the day.
• Set a reminder time for each certification (Premium)

New "Auto" appearance: shikakuLog now switches between light and dark to match your device (Premium).

### 1.2.1 — 2026-08-24

Bug fix for reminders.

• Fixed an issue where some reminders were not scheduled when you track a large number of certifications

### 1.2.0 — 2026-08-21

See your study habit at a glance.

• New study heatmap in Analytics — 18 weeks of study time shown as a grid of shaded squares (Premium)
• Spot the days you kept going, and the gaps, in a single view

### 1.1.1 — 2026-08-17

Improvements to certification cards.

• Fixed an issue where the exam date or study start date could be cut off when several details were saved
• Earned certifications now show both the date earned and the expiration date

### 1.1.0 — 2026-08-08

A completely refreshed look — including a brand-new app icon.

Redesigned screens
• Cards now sit on a light background, making information easier to scan
• Redesigned Home stats — see your next exam date and soonest expiry at a glance
• Calendar, Analytics, and certification details now share the same visual style

Easier to read
• Clearer status colors for Earned, Studying, Exam scheduled, and Expiring
• Refined text sizes and weights so the hierarchy is obvious
• All text now meets WCAG AA contrast standards

Also in this update
• Quick access to notification settings from Home when reminders are on
• Simplified Lock Screen widget with a larger exam countdown

## Apps similar to shikakuLog

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [ID期限リマインダー](https://appshunter.io/ios/app/id/id6754081427) | 3.0 (1) | Free | Productivity |
| [Yotemy - Countdown to Remember](https://appshunter.io/ios/app/yotemy-countdown-to-remember/id6814907314) | — | Free | Productivity |
| [SwingCat - Focus Timer](https://appshunter.io/ios/app/swingcat-focus-timer/id6800948890) | — | Free | Productivity |
| [Kurashi OS - Daily Organizer](https://appshunter.io/ios/app/kurashi-os-daily-organizer/id6811847615) | — | Free | Productivity |
| [Task Smash : Daily To-Do](https://appshunter.io/ios/app/task-smash-daily-to-do/id6791799005) | — | Free | Productivity |
| [DayLog – One-Tap Time Tracker](https://appshunter.io/ios/app/daylog-one-tap-time-tracker/id6777721684) | — | Free | Productivity |

## More apps by Ryota Ogiwara

- [Pano Hunt: 360° Hidden Objects](https://appshunter.io/ios/app/pano-hunt-360-hidden-objects/id6799300159)
- [Flash Anzan & Memory: Pikapara](https://appshunter.io/ios/app/flash-anzan-and-memory-pikapara/id6805305094)

All apps by Ryota Ogiwara: https://appshunter.io/developer/6789401368

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-02.*