# SUIKEI - Aquarium Journal — Keep your aquarium, in photos

> Keep your aquarium, in photos (iPhone/iPad app by yutaka sugita.)

- Source: https://appshunter.io/ios/app/suikei-aquarium-journal/id6802042503 (this page in markdown: same URL + `.md`)
- Developer: [yutaka sugita](https://appshunter.io/developer/6784570587)
- Category: Lifestyle, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.1 · 38 MB
- Languages: American English, Japanese
- Released: 2026-09-01
- Data updated: 2026-10-09

## What is SUIKEI?

The tank you look at every day is the one whose small changes you stop noticing.
SUIKEI keeps your tank's photos, care logs and water readings together, so you can look back on how it grew.
One tank is free for as long as you like — photos, care and readings, all of it.
And for 45 days from the day you add your first tank, every Premium feature is open too.
No ads, anywhere.
■ What you can do with SUIKEI
・Log a water change or a feeding in two taps
Quick enough to do standing at the tank. "When was the last water change?" is easy to answer later.
・Look back on your tank in photos
Photos are filed by month, so plant growth, your fish, and layout changes read as a record of the tank growing.
・Fixed-point photos, the same angle every time
The previous photo is ghosted over the camera, so you shoot from the same spot at the same angle. Put past and present side by side and the small changes are obvious.
・Water readings in the units you already use
Enter them exactly as your test kit shows them. NO₃ and NO₃-N, °dH and ppm, specific gravity and salinity convert automatically, hydrometer calibration temperature included.
・No ads, even on the free plan
Not while you log, not while you look back. Time with your tank should be quiet.
■ Free, for as long as you like
・One tank
・Recording and editing photos, care logs and water readings, with no limit on how many
・Fixed-point photos
・Your oldest photo and your newest, side by side
・Time-lapse of up to 10 frames
・Export and delete your data
For 45 days from the day you add your first tank, the Premium features are open as well. After those 45 days, one tank keeps going, free.
■ SUIKEI Premium
For keeping several tanks, or following the changes more closely.
・As many tanks as you like
・Compare any two days you choose
・Time-lapse across every photo
・Several fixed points per tank — front, side, top
・Cloud backup
Monthly: JPY 480 / month
Yearly: JPY 4,800 / year (JPY 400 per month)
■ About purchases
・Payment is charged to your Apple ID.
・It renews at the same plan and price unless cancelled at least 24 hours before the period ends.
・The renewal is charged within 24 hours before the current period ends.
・Cancel from the subscription settings on your device. Cancellation is not possible from within the app.
・If you buy a paid plan during the 45-day free period, the unused part of that period ends at that point.
Privacy Policy:
https://suikei.verdolab.com/privacy
Terms of Use:
https://suikei.verdolab.com/terms

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| SUIKEI Premium (Yearly) | $29.99 | per year |
| SUIKEI Premium (Monthly) | $2.99 | per month |


## Is SUIKEI safe?

Not enough ratings yet to assess SUIKEI.

## Is SUIKEI legit?

SUIKEI - Aquarium Journal appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for SUIKEI is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 3 releases)

### 1.3.0 — 2026-09-07

One tank, free for as long as you like.
This update adds a free plan, so that after the 45-day trial ends you can keep recording one tank for free.
- Recording and editing photos, care logs and water readings stays free
- Comparing your oldest photo with your newest stays free
- You can now delete photos one at a time, or a whole day at once
- Fixed dates that could show up shifted from the actual time
We hope you keep leaving your tank's changes in SUIKEI.

### 1.2.0 — 2026-09-03

More ways to keep your tank's history.
- Take a photo without setting up a fixed point first
- Import photos you already have (their original dates are kept)
- Add a note to a photo
- Create your own care log types
- 13 tank types now, including goldfish, betta, outdoor ponds, paludariums and axolotls
- Reviewed the water targets and default dimensions for each type

### 1.1 — 2026-09-01

No release notes.

## Apps similar to SUIKEI

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Aquarium Log: Tank Care](https://appshunter.io/ios/app/aquarium-log-tank-care/id6794589006) | — | Free | Lifestyle |
| [Aquascape Journal: Dosing](https://appshunter.io/ios/app/aquascape-journal-dosing/id6785157062) | — | Free | Lifestyle |
| [Aquarium Care - TankMinder](https://appshunter.io/ios/app/aquarium-care-tankminder/id6778477412) | — | Free | Lifestyle |
| [AquaTrackr](https://appshunter.io/ios/app/aquatrackr/id6760959164) | — | Free | Lifestyle |
| [アクアリウムノート - 水槽・水質記録](https://appshunter.io/ios/app/id6758006953) | — | Free | Lifestyle |
| [ScaleKeep - Reptile Care Log](https://appshunter.io/ios/app/scalekeep-reptile-care-log/id6759274575) | — | Free | Lifestyle |

## More apps by yutaka sugita

- [Plantory: Plant Collection](https://appshunter.io/ios/app/plantory-plant-collection/id6784570584)
- [サプリログ](https://appshunter.io/ios/app/id6797578297)

All apps by yutaka sugita: https://appshunter.io/developer/6784570587

## Related topics

[tanka](https://appshunter.io/ios/topics/tanka)

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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 2026-10-09.*