Comparison

Data Usage Meter vs 税金ナビ

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

Head to head
About

Data Usage Meter

Monitor your cellular and Wi-Fi data consumption with daily charts and custom alerts. See your usage at a glance, track historical trends, and receive notifications to stay within your data limits. Customize widgets for quick access to your remaining data.

Highlights
  • Cellular and Wi-Fi usage tracking
  • Home and Lock Screen widgets
  • Daily usage graphs
  • Customizable data alerts
  • App icon badge usage display
  • Plan period matching
  • Accessibility support
Features
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Data usage, at a glance — every day. Data Meter shows how much cellular and Wi-Fi data your iPhone or iPad uses. Check today’s usage, look back at daily changes in a graph, and keep your data under control if you’re worried about going over. [Key Features] ■ Cellular and Wi-Fi, shown separately See your usage for today, the last 3 days, and this month. For cellular data, a meter also shows how much of your limit you’ve used. ■ See your remaining data in widgets Add widgets to your Home Screen (small and medium) and Lock Screen to see your remaining cellular data and the percentage used this month. The medium widget also shows the days left until your cutoff date. On devices without cellular, widgets show your Wi-Fi usage. ■ Review daily usage in a graph A monthly bar graph shows your usage for each day. See the monthly total, the daily average, and the number of days over your limit as you look back at past usage. ■ Get notified before you use too much Choose a network and period, and get notified when your usage passes the amount you set. For cellular data, you can also set the alert as a percentage of your limit. While you set it up, you can see the alert conditions and your current usage. ■ Usage on the app icon badge Show the usage for the network and period you choose on the app icon badge. ■ Match the period to your plan Monthly usage can be counted from your plan’s cutoff date. For the last 3 days, you can choose whether to include today. ■ Support for larger text and VoiceOver The app stays readable with larger text sizes, and VoiceOver reads your usage aloud. ■ Add-on to remove ads Remove ads with an in-app purchase. If you’ve already bought it, you can restore your purchase, for example after switching to a new device. [Before You Use] The usage shown is an estimate based on values from your device. It may differ from the usage your carrier uses for billing or speed limits. For your exact usage under your plan, check with your carrier. Recording, notifications, badges, and widgets don’t update in real time. Updates and notifications may be delayed depending on how iOS is running and on network conditions. To keep recording in the background, turn on Background App Refresh in the Settings app. Recording may stop in situations such as Low Power Mode. If you swipe up to close the app in the App Switcher, the app stops recording in the background until you open it again. If you’ve added a widget, recording continues when the widget updates (iOS decides how often it updates). To use notifications and badges, allow notifications and badges for this app in the Settings app. Restarting your device or similar events can cause errors in the usage. Before and after a restart, or if you haven’t opened the app for a while, open the app to update your usage. [Requirements] iOS 16.0 or later, iPadOS 16.0 or later *Lock Screen widgets on iPad require iPadOS 17 or later.

About

税金ナビ

Features
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税金を、わかりやすく。 「結局いくら引かれるの?」「この控除、自分は使えるの?」 そんな税金のモヤモヤを、税金ナビゲーターが解消します。 ただ計算するだけでなく、なぜその金額になるのかをステップごとに解説。数字の裏側にある「しくみ」まで理解できる、日本の税金に特化した計算アプリです。 ■ 給与・年末調整 ・所得税・住民税:年収と控除から税額と手取りを計算(逆算にも対応) ・源泉徴収票の登録:スキャンまたは手入力でかんたん登録、他の計算にも再利用 ・給与メモ:毎月の給与・賞与を記録して、年間の推移をグラフで確認 ・扶養の壁シミュレーター:103・106・130・150・201万円の壁と「働き損」ゾーンを可視化 ■ 控除・節税 ・ふるさと納税:控除上限額と自己負担2,000円のしくみをやさしく解説 ・掛金で節税:iDeCo・小規模企業共済などの節税効果を試算 ・医療費控除:セルフメディケーション税制との比較にも対応 ・住宅ローン控除:控除額をシミュレーション ■ 資産・相続・贈与 ・相続税・贈与税:法定相続人や生命保険から負担額を試算 ・固定資産税:評価額から税額を概算 ・減価償却:事業用資産の減価償却を試算し、台帳として管理 ■ 給付金・ライフイベント ・育休・産休給付金、退職金の税金、失業給付、年金の手取り、年金の繰上げ・繰下げなど、人生の節目で気になる制度をカバー ■ 副業・事業 ・副業の申告判定、役員給与シミュレーションにも対応 すべての計算はお使いの端末内で完結。入力したデータが外部のサーバーに送信されることはありません。 一部の機能はプレミアム(月額/年額/買い切り)でご利用いただけます。 【プレミアムについて】 本アプリの一部機能は、以下のプランでご利用いただけます。 ・月額プラン(自動更新) ・年額プラン(自動更新) ・買い切りプラン(一度のお支払い) 価格はApp内の購入画面に表示されます。 自動更新サブスクリプションについて: ・お支払いは購入確定時にApple IDに請求されます。 ・現在の期間終了の24時間以上前に自動更新をオフにしない限り自動更新され、更新料金が請求されます。 ・購入後、「設定」> Apple ID >「サブスクリプション」から管理・解約できます。 利用規約(EULA):https://nao22c.github.io/TaxNavi/terms.html プライバシーポリシー:https://nao22c.github.io/TaxNavi/privacy-policy.html ※本アプリの計算結果は令和7年度基準の概算・参考値です。正確な税額は税理士・税務署にご確認ください。

Screenshots

Data Usage Meter2 screens
税金ナビ4 screens

Verdict

The call

The clearest difference is in-app purchases: 税金ナビ at none against Data Usage Meter's 1. On price, update cadence, ads and device support 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. Data Usage Meter sells 1 one-off in-app purchase. 税金ナビ asks for nothing beyond the download.

UpkeepUpdate frequency

Data Usage Meter ships an update every 5 weeks, 税金ナビ every 2 months. The most recent releases landed on November 2, 2026 and November 10, 2026 respectively.

Scorecard1 real difference · 7 level
Data Usage Meter versus 税金ナビ: the parameters behind the verdict, then further details
ParameterData Usage Meter税金ナビ
PriceFreeFree
Positive reviews9.1% of reviews—
Update frequencyEvery 5 weeks — betterEvery 2 months
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad — betteriPhone
Requires iOS16.0 — better17.0
Further details — not scored
Size6 MB15 MB
Age rating4+4+
DevelopernanaworkNAOTO SUGIYAMA

In-app purchases

1 purchases

Data Usage Meter

One-time1
  • Remove Ads.$1.99
None

税金ナビ

No in-app purchases

Questions

Is Data Usage Meter free?
Data Usage Meter is free to download, with in-app purchases available.
Is 税金ナビ free?
税金ナビ is free to download, with no in-app purchases.
Do Data Usage Meter or 税金ナビ have ads?
Both Data Usage Meter and 税金ナビ show ads.
Which is updated more often, Data Usage Meter or 税金ナビ?
Data Usage Meter ships an update every 5 weeks, and 税金ナビ every 2 months. Most recently, Data Usage Meter was updated on November 2, 2026 and 税金ナビ on November 10, 2026.

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