# Sumika - Deep Sea Pocketbook — Calm Budget & Expense Tracker

> Simple expense tracker with a growing deep-sea creature collection. (iPhone/iPad app by Eiji Iriyama.)

- Source: https://appshunter.io/ios/app/sumika-deep-sea-pocketbook/id6759132149 (this page in markdown: same URL + `.md`)
- Developer: [Eiji Iriyama](https://appshunter.io/developer/1850943118)
- Category: Finance, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.5 · 15 MB
- Languages: American English, French (France), German (Germany), Japanese, Korean, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan)
- Released: 2026-04-07
- Data updated: 2026-09-06
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/sumika-deep-sea-pocketbook/id6759132149/reviews.md

## What is Sumika?

Manage your spending with ease using this simple, intuitive pocketbook app. No complicated categories or overwhelming reports—just a clear view of your money.

If you're looking for a straightforward way to record your daily expenses, Sumika is for you. As you track your spending, your private deep-sea world grows, attracting unique and mysterious creatures to join your sanctuary.

◆ Perfect for:

Moms and dads who recently switched to an allowance after having a child.

Workers managing their daily costs within a monthly budget.

Students starting to manage their own pocket money for the first time.

◆ Key Features:

Simple Recording: Log your income and expenses with quick, intuitive taps.

Spending Pace Gauge: See at a glance if you're spending too fast compared to your next allowance date.

Deep-Sea Collection: Meet adorable creatures like flapjack octopuses and anglerfish as you maintain your habits.

Your Own Encyclopedia: Build a collection of sea friends. Discovering who comes next makes daily logging a joy.

Passcode Lock: Keep your sanctuary safe and private with a built-in passcode feature.

Your allowance is your own world—a private space where you make the rules. Build your sanctuary and enjoy your financial journey with the inhabitants of the deep. Welcome to Sumika.

 Terms of Use: https://peppered-khaan-8e0.notion.site/Terms-of-Service-32f611f99392808faeb5c2acc4aa2c8e

## Key features

- Simple income and expense logging
- Spending pace gauge
- Deep-sea creature collection
- Personalized encyclopedia of sea friends
- Passcode lock for privacy
- Intuitive financial management

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

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

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Premium (Lifetime) | $59.99 | one-time |


## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/sumika-deep-sea-pocketbook/id6759132149/reviews.md

### 5/5 — シンプル◯

*2026-04-18*

シンプルで使いやすいです！

**Developer response:** わざわざレビューいただき、誠にありがとうございます。これからも、深海の世界をお楽しみください！

### 5/5 — バグ？

*2026-04-11*

シンプルで過不足のない機能、ちょっとしたご褒美のようなホームの変化が素敵です。
一点だけ気になったのが、ダークモード機能の悪さのように思うのですが、ダークモード中だとボタンの文字が全く見えなくなってしまいます。
ご確認いただければ幸いです。

2026/04/11追記：アップデートでの改善ありがとうございます🌟

**Developer response:** アプリリリース直後に、ダウンロードいただき、誠にありがとうございます。
ダークモードでご不憫をおかけましたが、その後アップデートもいただき、ありがとうございます。初期からのユーザーとして、これからも深海の世界をお楽しみいただければと思います。

## Frequently asked questions about Sumika

### What is Sumika?

Sumika is a finance app designed for simple budget and expense tracking. It allows users to log income and expenses easily, with a unique feature of growing a deep-sea world and collecting creatures as they manage their money.

### Is Sumika free to use?

Sumika is free to download and use, offering core budgeting features. It also includes in-app purchases for additional content or features, and contains advertisements.

### What are the subscription options for Sumika?

Sumika offers a Premium Monthly subscription for $2.99 and a Premium Yearly subscription for $29.99, providing enhanced features or an ad-free experience.

### How does Sumika ensure my financial data is secure?

Sumika includes a passcode lock feature to keep your financial sanctuary private and secure. This helps protect your personal spending information from unauthorized access.

### What kind of creatures can I collect in Sumika?

As you track your spending, you can attract and collect various adorable deep-sea creatures, such as flapjack octopuses and anglerfish, to your personal sanctuary.

### Does Sumika have ads?

Yes, Sumika contains advertisements. Users can opt for premium subscription plans to potentially remove ads and access additional benefits.

### On which devices can I use Sumika?

Currently, Sumika is supported on iPhone devices. Future platform expansions may be announced by the developer.

### How often is Sumika updated?

The latest version of Sumika is 1.10, and it was last updated on June 16, 2026. Updates typically bring new features, bug fixes, and performance improvements.

## Version history (last 5 releases)

### 1.10 — 2026-06-16

[v1.10 Update]

New Creature: Giant Pacific Octopus
The "Giant Pacific Octopus" has arrived in the deep sea! Enjoy its fascinating and mysterious animations as it masterfully camouflages itself to fade into the background and reappear when you least expect it.

New Creature: Leatherback Sea Turtle
Meet the "Leatherback Sea Turtle," the largest of all living turtles. Watch it glide gracefully through the deep with smooth, fluffy paddling movements, bringing an extra touch of serenity to your daily logging routine.

Customize Sumika to fit your own unique style and enjoy your peaceful logging journey.
This update also includes ongoing bug fixes and performance improvements. If you love Sumika, please leave us a review—it truly means the world to an indie developer!

### 1.9 — 2026-05-21

[v1.9 Update]
New Theme: "Hadal Zone"
You can now switch your background to the "Hadal Zone" (Ultra-Deep mode) under Settings. Immerse yourself in a pitch-black, serene world beyond 6,000 meters—perfect for nighttime logging or when you want to dive deeper into stillness.

Custom Font Selection
Personalize the app’s interface with three distinct font styles to match your mood:
・Basic: Our clean, simple, and easy-to-read default font.
・Round: A warm, charming rounded font (Kiwi Maru) that perfectly blends with Sumika's illustrations.
・Retro: A nostalgic 8-bit font (DotGothic16) that instantly brings a classic exploration game vibe to your deep-sea journey.

Frilled Shark Animation Overhaul
We have beautifully polished the animations for the "Frilled Shark." Descend into the deep to watch this mysterious living fossil swim with smooth, fluid movements that bring a new level of realism and wonder to the ocean.

Customize Sumika to fit your own unique style and enjoy your peaceful logging journey.
This update also includes ongoing bug fixes and performance improvements. If you love Sumika, please leave us a review—it truly means the world to an indie developer!

### 1.8 — 2026-05-12

[What's New in v1.8]
Title: Bringing More Life to the Deep Sea.
* Evolved Swimming: Some deep-sea creatures have learned to turn more naturally with smooth rotations. Enjoy watching them swim more freely and realistically than ever before.
* Opah Redesign: We’ve completely refreshed the movement of the Opah (Moonfish). Keep an eye out for its unique new swimming style!
* A More Comfortable Experience: We’ve optimized the ad display for every device (Adaptive Banners), ensuring a smoother and more seamless experience as you explore the depths.

### 1.7.1 — 2026-04-30

[What's New in v1.7.1]
Thank you for using Sumika. In this version, we’ve introduced a new plan to make your deep-sea experience even better!

Added "Lifetime Plan": You can now unlock all premium features with a one-time purchase.

Minor bug fixes and performance improvements.

Enjoy your peaceful life in the deep sea.

### 1.7 — 2026-04-26

[What's New in v1.7]
We have prepared a special gift for those who cherish the quiet of the deep sea.
* Meet the Legendary Trio: Supporters can now welcome the Viperfish, Pelican Eel, and the ancient Coelacanth to their sanctuary.
* Preserving the Peace: All ads vanish into the deep for our supporters, ensuring a 100% immersive experience.
* Refined UI: The subscription screen has been redesigned as an "Invitation to the Deep." You can now preview the creatures before welcoming them.
* Privacy for Everyone: The passcode lock feature is now free for all users. Secure your "Sumika" with ease.

## More apps by Eiji Iriyama

- [Facilitator Timer](https://appshunter.io/ios/app/facilitator-timer/id6754923369)

All apps by Eiji Iriyama: https://appshunter.io/developer/1850943118

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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 2026-09-06.*