Comparison

DecideNow vs Oitayo

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

Head to head
About

DecideNow

Features
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Key Features ・Intuitive Interface: Solve complex problems easily with simple operations ・Adopts AHP (Analytic Hierarchy Process): Easily use a highly reliable decision-making method ・Intuitive Result Display: Clearly visualize the priority of options with graphs ・Various Use Scenarios: Applicable in many situations such as choosing a job, selecting a school, purchasing products, picking business partners, deciding on travel destinations, even selecting a restaurant out and more.

About

Oitayo

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しまった場所だけを、写真で覚えておく。 「片付けたことは覚えている。でも、どこにしまったか思い出せない」 Oitayoは、そのためだけのアプリです。 ■ 使い方は3ステップ 1. しまった場所を撮る 2. 何をしまったか、名前を入れる 3. 保存する たったこれだけ。 あとから「印鑑」「通帳」と入れて検索すれば、そのときの写真がそのまま出てきます。 ■ こんなものに ・通帳、印鑑、パスポート、保険証券 ・季節の飾り、扇風機、ヒーター ・防災用品、予備の電池、電球 ・家電の取扱説明書、保証書 ・普段は使わない工具、来客用の食器 年に数回しか触らないものほど、しまった場所を忘れます。 ■ 記録は端末の中だけ 写真も、物の名前も、しまった場所も、すべてお使いのiPhoneの中にだけ保存されます。開発者を含め、誰かのサーバーへ送られることはありません。アカウント登録も不要です。広告も表示しません。 ■ 料金 無料で5件まで記録できます。それ以上は有料プランでご利用いただけます。買い切りプランなら、一度のお支払いで以降ずっとお使いいただけます。 ご利用にあたっては、以下の利用規約(Apple標準EULA)が適用されます。 https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

DecideNow3 screens
Oitayo4 screens

Verdict

The call

The clearest difference is ads: Oitayo at none against DecideNow's shown. Oitayo also leads on update cadence (every 2 days vs weekly). DecideNow's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price and in-app purchases 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. DecideNow sells 1 one-off in-app purchase and Oitayo sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

DecideNow ships an update weekly, Oitayo every 2 days. The most recent releases landed on October 8, 2026 and October 14, 2026 respectively.

Scorecard4 real differences · 2 level
DecideNow versus Oitayo: the parameters behind the verdict, then further details
ParameterDecideNowOitayo
PriceFreeFree
Update frequencyWeeklyEvery 2 days — better
AdsYesNo — better
In-app purchasesYesYes
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better17.0
Further details — not scored
Size46 MB1 MB
Age rating4+4+
DeveloperTakuma Nishimaki合同会社JProduct

In-app purchases

1 purchases

DecideNow

One-time1
  • Upgrade to Pro$2.99
2 purchases

Oitayo

Subscriptions1
  • 月額プラン$1.991 Month
One-time1
  • 買い切り$6.99

Questions

Is DecideNow free?
DecideNow is free to download, with in-app purchases available.
Is Oitayo free?
Oitayo is free to download, with in-app purchases available.
Do DecideNow or Oitayo have ads?
DecideNow shows ads; Oitayo does not.
Which is updated more often, DecideNow or Oitayo?
DecideNow ships an update weekly, and Oitayo every 2 days. Most recently, DecideNow was updated on October 8, 2026 and Oitayo on October 14, 2026.

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