Guard Ninja vs Echo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Guard Ninja
This app acts as a personal security guard for your phone and belongings. It triggers an alarm if someone attempts to move or tamper with your device or items it's placed near, providing customizable sound, light, and vibration alerts.
- Motion-activated alarm
- Customizable alarm sounds, light, and vibration
- Adjustable sensitivity settings
- Password protection to disarm
- Timer for arming and disarming
- Protect nearby items like wallets and suitcases
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Meet Guard Ninja - the guard of your phone! You don't know how to secure your phone? With this app you can leave your phone alone. Nobody will touch it without launching an alarm. Sleeping in a train or on the airport without anxiety that someone will rob you won’t be a problem. Guard Ninja will warn you in every situation like that. Increase phone security in a simple way! Not only your phone, but also other things nearby can be protected with Guard Ninja app. Simply, put your guarded phone for example into your suitcase. Or lay it down on your wallet or laptop. If someone will try to take your things, alarm will turn on. And you can react quickly. How the app works? You can create your own, customizable alarm. Use different alarms for specific situations. Creating an alarm includes a few elements: Decide what will be your alarm behavior. You can turn on the sound, light or vibration. Behaviors can be mixed, depends on you. Set sensitivity for your alarm. Adjust sensitivity of phone movement which will activate the alarm. Set timers to arm and disarm your alarm. You will have some time to put the phone in a place where you suspect it can be touched and then to turn the alarm off before it will launch. Create your unique password to disarm the alarm. Your alarm list is always visible on home screen. In every moment one of them can be activated.
Echo
This app helps you track important dates like anniversaries and manage daily notes. It offers local reminders, diary entries with moods, and a "On This Day" feature to revisit past memories. The minimalist design keeps everything private and on your device.
- Anniversary and countdown tracking
- Local reminders
- Diary entries with moods
- On This Day flashbacks
- Privacy-first local storage
- PDF export of diary
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Echo Days is the quiet home for your time: anniversaries, a diary, private memos, and Insights in one app you buy once and keep forever. No ads, no subscriptions, no accounts, and no cloud — everything you write stays on your device. WHY PAY ONCE Free apps make you pay with attention and data. Echo keeps it simple: one purchase unlocks every feature, forever. No monthly fees, no tracking — the app works for you, not for advertisers. ANNIVERSARIES Count-up days, countdowns, and yearly anniversaries, calculated automatically. Custom icons and local reminders mean the moments that matter never slip by. DIARY Write short entries with mood tags, link them to events, find anything with search and filters, and export the whole notebook to PDF. MEMOS Accounts, cards, documents, and plain notes in one place. Custom rows, pinning, search, and one-tap copy put what you need at your fingertips. INSIGHTS & ON THIS DAY See how your records are distributed, how often you write, and how your mood shifts — then revisit past years, one day at a time. PRIVATE BY DESIGN No account, no sync, nothing uploaded. A gesture lock keeps the whole app to yourself. 7 languages, ready for iPhone Duo and iPad. One purchase, a companion for years. Give your memories one calm, complete home.
Screenshots
Verdict
The clearest difference is review sentiment: Echo at 100% against Guard Ninja's 43%. Guard Ninja's advantage is price (Free vs $3.99). On update cadence, ads, in-app purchases and monetization model 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
Guard Ninja is free to download; Echo costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Guard Ninja ships an update every 3 months, Echo every 6 weeks. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.
| Parameter | Guard Ninja | Echo |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | 4.5 (46 ratings) — better | — |
| Positive reviews | 42.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 46 — better | — |
| Update frequency | Every 3 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 7 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Jan Slusarz | 鹏 杨 |
Customer experience
Guard Ninja
Echo
In-app purchases
Guard Ninja
No in-app purchases
Echo
No in-app purchases









