Comparison

Tracker Reveal vs There Yesterday

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

Head to head
About

Tracker Reveal

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Could there be an unknown Bluetooth tracker hidden in your belongings? Tracker Reveal is a simple tool to help you check. No sign-up required. No data sent anywhere. Everything runs entirely on your device. ——— When to Use ・Wondering if an unknown tracker is attached to your bag or wallet ・Want to check a package or secondhand item for hidden tags ・Just want a quick, easy way to check when something feels off ——— Two-Step Scan for Accurate Detection 1. Environment Scan — Record the Bluetooth signals around you while away from the item 2. Proximity Scan — Bring the item close and rescan to detect any changes Just follow the on-screen instructions. It takes as little as 20 seconds. If you get a concerning result, use "Additional Verification" to rescan and confirm whether the detection is consistent. ——— What This App Can Do ・Detect trackers potentially hidden in your belongings ・Verify detection consistency with additional scans ・Save scan results as history on your device ※ This app does not interact with or send notifications to trackers. ——— What It Can't Do ・Identify the owner of a tracker ・Measure exact distance or track locations ・Control or disable trackers ——— Privacy ・No sign-up ・No data transmission ・100% on-device No personal information is collected, stored, or transmitted. Scan results are saved only on your device and are never sent externally. ——— Please Note ・Not all trackers can be detected ・Only Bluetooth-enabled trackers are supported ・Results are intended as a reference, not a guarantee of safety ・If you have ongoing concerns, please contact local authorities or the tracker manufacturer's support ——— A Simple, Trustworthy Check Tool This app avoids unnecessary features and operations. Its purpose is to give you a starting point for awareness.

About

There Yesterday

Features
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Record your X following and followers and check who appeared, disappeared or returned. Changes reflect the time of fetching; the app does not determine causes such as unfollowing, suspension or account deletion. Connection changes Compared with the last snapshot before the period. If there is none, the first snapshot is the baseline. People in the same state as the baseline, such as those who disappeared and returned, are not shown. Changes between fetches cannot be observed. On iPhone and the web, accept the terms and sign in with Apple before using the app. Allowances are managed per Apple sign-in. No separate ID or password registration is required. You can link up to 5 X accounts. Connections They follow you, you follow them, or both. Find connections by name. Save following and follower counts with the time they were fetched. Add records from ZIP Read your X archive on your device. Free, with no X linking required. Records and storage Records are stored on your device, up to about 1 GB across all accounts. There is no fixed limit on following, followers or saved snapshots. The first snapshot is the baseline. We do not determine why someone disappeared. Monthly plans Fetches are shared across up to 5 accounts. Successfully fetching one account’s following and followers uses one fetch. Fetch manually at least 12 hours after a success. Unused fetches do not roll over. There are 5 free tickets in total, with no automatic conversion to a paid plan. An upgrade applies as soon as Apple confirms it; a downgrade applies at the next renewal. Only one monthly plan can be active at a time. After cancellation, you can use the plan until the subscription period ends. Cancel through the App Store. Saved records remain viewable after your subscription ends. Check suspension Pressing Check suspension sends the person’s X ID through the relay to twitterapi.io to check their current status. Each person checked uses one check, including unknown results and communication failures. This is separate from list fetching: linked accounts share 10 checks per month, resetting at 00:00 Japan time on the first day of each month. Relay results expire after 1 hour and are removed every 5 minutes. Identifiers for usage limits, usage times and hashes of target IDs are retained. Results reflect the time of checking and do not prove why someone disappeared. This app uses the third-party service twitterapi.io instead of the official X API to keep data retrieval costs down. twitterapi.io is operated by Prism Digital, LLC, based in the United States, and is independent of X. Privacy policy: https://kinou-wa-itahazu.kagayoi.com/privacy?lang=en Terms of use (EULA): https://kinou-wa-itahazu.kagayoi.com/terms?lang=en

Screenshots

There Yesterday4 screens

Verdict

The call

The clearest difference is in-app purchases: Tracker Reveal at none against There Yesterday's 2. There Yesterday's advantage is device support and iOS requirement (15.1 vs 17.6). On price 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. There Yesterday sells 2 in-app purchases, starting at $5.99 per month. Tracker Reveal asks for nothing beyond the download.

Scorecard3 real differences · 3 level
Tracker Reveal versus There Yesterday: the parameters behind the verdict, then further details
ParameterTracker RevealThere Yesterday
PriceFreeFree
Update frequency—Daily
Ads—No
In-app purchasesNo — betterYes
Devices—iPhone, iPad, iPod — better
Requires iOS17.615.1 — better
Further details — not scored
Size2 MB37 MB
Age rating4+12+
DeveloperStartPort LLCYuichiro Shinozaki

In-app purchases

None

Tracker Reveal

No in-app purchases

2 purchases

There Yesterday

Subscriptions2
  • Standard$5.991 Month
  • Plus$19.991 Month

Questions

Is Tracker Reveal free?
Tracker Reveal is free to download, with no in-app purchases.
Is There Yesterday free?
There Yesterday is free to download, with in-app purchases available.

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