Comparison

Sum Calculator Memo vs DotChi?

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Sum Calculator Memo

Easily calculate the total cost of multiple items while shopping. This app allows you to input product names and amounts, with options to adjust units for weight or length calculations. Saved lists enable easy comparison and later review of your purchases.

Highlights
  • Automatic total calculation
  • Product name and amount entry
  • Unit conversion (weight, length)
  • Quantity setting toggle
  • Save and compare lists
  • Supports multiple units
Features
Read full description

It is a free app that can automatically calculate the total amount by taking a note of the product name and amount. You can easily check the total amount when purchasing multiple items at shopping. You can also change the units, so you can calculate the total weight and length. If you purchase more than one of the same product, you can switch between displaying and hiding the quantity setting. You can easily check the total amount by entering only the amount. The entered list can be saved with a name, so you can check it later or compare multiple lists. [List of Units] Price: dollar Length: meters, centimeters, kilometers Weight: grams, kilograms Qty: pcs Volume: liters, milliliters

About

DotChi?

Features
Read full description

お買物時の「どっちが安い?」を瞬時に解決! DotChi?は、商品の価格と内容量を比較して最安値を見つける、シンプルな価格比較アプリです。 【主な機能】 • 自動単価計算 : 価格・内容量・個数を入力するだけで、自動で単価を計算。 • 一目で最安値 : 最も安い商品を瞬時に判別して表示。(比較商品は最大10商品まで登録できます。) • 比較結果の保存機能(最大50件まで) : 比較結果を保存して、いつでも瞬時に確認。 • お気に入り機能 : よく使う比較結果を最大5件までホーム画面に常時表示可能。 • 保存履歴管理 : 過去の比較結果を時系列で管理、必要な時にすぐアクセス。 • 簡易統計機能 : 総節約額と平均節約率で、あなたの節約効果を可視化。 • 左利きモード : 左利きの方も手早く入力できる左利きモード搭載。 • 近似値変換モード:gとmlやKgとLといった厳密には異なる単位も近似値で変換比較できるモードを搭載。 【こんな時に便利】 • スーパーで同じ商品の異なるサイズで迷った時 • 内容量や価格の異なる商品でどれがお得か計算したい時 • よく買う商品の価格変動をチェックしたい時 • まとめ買いと個別購入、どちらがお得か知りたい時 【比較結果の保存と再利用でスマートにショッピング】 一度作成した比較結果は保存して、いつでも呼び出し可能。よく買う商品はお気に入りに登録して、ホーム画面からワンタップでアクセス。毎回同じ商品を入力する手間が省け、買い物がもっと効率的になります。 【おすすめの使い方】 よく買う商品(米、調味料、洗剤など)の比較結果を保存しておくと、買い物の度に入力し直す必要がなく、価格変動もすぐにチェックできて便利です! 【あなたの節約を見える化】 ホーム画面には総節約額と平均節約率を表示。保存された全ての比較結果から、あなたの節約成果が一目瞭然です。 スマートなショッピングにDotchi?をご活用ください。

Screenshots

Sum Calculator Memo3 screens
DotChi?4 screens

Verdict

The call

The clearest difference is in-app purchases: Sum Calculator Memo at none against DotChi?'s 1. Sum Calculator Memo also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.6). DotChi?'s advantage is update cadence (every 9 days vs every 11 months). On price and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. DotChi? sells 1 one-off in-app purchase. Sum Calculator Memo asks for nothing beyond the download.

UpkeepUpdate frequency

Sum Calculator Memo ships an update every 11 months, DotChi? every 9 days. The most recent releases landed on October 2, 2026 and October 11, 2026 respectively.

Scorecard4 real differences · 5 level
Sum Calculator Memo versus DotChi?: the parameters behind the verdict, then further details
ParameterSum Calculator MemoDotChi?
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 11 monthsEvery 9 days — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better16.6
Further details — not scored
Size17 MB8 MB
Age rating4+4+
DeveloperKouji YamauchiKenji Shimura

In-app purchases

None

Sum Calculator Memo

No in-app purchases

1 purchases

DotChi?

One-time1
  • 広告非表示$0.99

Questions

Is Sum Calculator Memo free?
Sum Calculator Memo is free to download, with no in-app purchases.
Is DotChi? free?
DotChi? is free to download, with in-app purchases available.
Do Sum Calculator Memo or DotChi? have ads?
Both Sum Calculator Memo and DotChi? show ads.
Which is updated more often, Sum Calculator Memo or DotChi??
Sum Calculator Memo ships an update every 11 months, and DotChi? every 9 days. Most recently, Sum Calculator Memo was updated on October 2, 2026 and DotChi? on October 11, 2026.

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