Ghostalker vs Sincerely
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ghostalker
This app uses device sensors to interpret environmental changes into spoken words, acting as a spirit box for paranormal investigation or entertainment. It features a large word database, custom dictionary options, and detailed logging of sensor data and spoken words.
- Sensor data interpretation
- Spoken word output
- Extensive word database
- Customizable word dictionary
- Detailed logging (CSV format)
- Log viewer
- Calibration feature
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Whether you are a professional Paranormal Investigator, a hobbyist or just want to have some fun, this app works like a "Spirit Box" reading data from your sensors and turning it into spoken words. With a database of over a thousand commonly used words, Ghostalker will read changes in all of the sensors it can find in your device. This includes sensors for the tiniest amount of vibration, rotation, GPS, gyroscope, light, magnetic fields, proximity etc. and convert them to words which it will display and speak. This app uses the actual raw data from the sensors to determine what to say, rather than picking words at random like some other apps. LOGGING: This is the full version of the app so it logs the words spoken for you to view, save, email, delete etc. at a later time. There is also a built-in log viewer. The date and time is logged, along with the combined change in sensor readings (so you can see how big a change was picked up) and the word. The log files are in CSV format so you can import them into your favourite spreadsheet (e.g. MS Excel or Google Sheets). DICTIONARY: You can also manage your own custom dictionary of words so you can make your own special list of replies. You can flick between the in-built dictionary, your own custom dictionary or both combined (from v0.5) at any time. This app is not designed to form complete sentences so it is up to you to interpret what it says in your own way. Top end phones and tablets tend to have more sensors than low end ones but the app is designed to work with whatever it can find. The sensitivity of sensors will also vary between devices. TIP 1: Using the custom dictionary you can have it reply with special limited words, for example 'yes', 'no' and 'maybe' when you ask it questions. Or add a series of digits and get it to pick your lottery numbers. Or add the letters of the alphabet so it can work like a Ouija board. TIP 2: Paranormal investigators believe that leaving such devices running for as long as possible will allow "spirits" to learn what energy is required to trigger certain words. TIP 3: If it starts to trigger words constantly you may be getting interference from something close by. Try moving the device somewhere else or tap the 'Calibrate' button to get it to tune out background variance (although you will lose some sensitivity). TIP 4: NEW - Keep lists of custom words in text files. Each word should be on its own line or separated by a space. Select all of the words and copy them to the clipboard. You can then import them into Ghostalker by pasting them from the clipboard. You can also copy word lists from the web, an email, or anywhere you can copy text. If the app does not do what you were expecting, or there is an issue with it running on your device, please contact us for help. There are no adverts in this software. If you would like to try the free version first (without the logging or custom dictionary functionality), it is listed under "Ghostalker Lite".
Sincerely
An anonymous platform to share your thoughts and feelings, connect with a supportive community, and receive caring responses. Features include writing letters, responding to others, sending virtual hugs, and tracking your emotional well-being.
- Anonymous letter writing
- Receive community responses
- Virtual hug feature
- Mood tracker and calendar
- AI chat for instant support
- Track impact with data streaks
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Need to unburden your soul? Feeling lost and looking for support? Sincerely is your anonymous haven to share, connect, and heal. Write your heart out in heartfelt letters, and receive caring responses from a supportive community. You're never alone. Connect with others who understand. Find solace and offer guidance in a judgment-free space. Why You'll Love It: • Write letters to get things off your chest. • Receive 3 letters every night at 8pm. • Respond to strangers and offer support. • Send virtual hugs to uplift others. • Track your impact with helpful data streaks. • Make friends and continue conversations. • Monitor your emotional well-being with a mood tracker and calendar. • Get instant support and answers from our AI chat. Ready to find your safe space? Download Sincerely today. Terms of Service: https://sincerelyapp.notion.site/Sincerely-Terms-of-Service-v04-01-2024-de28f29dc48e44a1b9bcf5e179541ccf Privacy Policy: https://sincerelyapp.notion.site/Sincerely-Privacy-Policy-v02-26-2024-d79628c1700d4d069e7d301671f88189
Screenshots
Verdict
The clearest difference is price: Sincerely at Free against Ghostalker's $2.99. Sincerely also leads on rating (4.7 vs 3.4) and update cadence (every 2 weeks vs every 5 months). Ghostalker's advantage is in-app purchases (none vs 10) and review sentiment (50% vs 40%). On 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
Sincerely is free to download; Ghostalker costs $2.99 up front. Sincerely sells 9 in-app purchases, starting at $4.99 per month. Ghostalker asks for nothing beyond the download.
Sincerely holds the better App Store score, 4.7 against 3.4. That said, the two scores are not equally well evidenced: Sincerely has 36K ratings behind it against 11, so its average is the more settled of the two. Written reviews complicate that: 50% of Ghostalker's written reviews are positive against 40% of Sincerely's, so the app with the better star average is not the one people write more warmly about.
Ghostalker ships an update every 5 months, Sincerely every 2 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.
| Parameter | Ghostalker | Sincerely |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 3.4 (11 ratings) | 4.7 (36K ratings) — better |
| Positive reviews | 50.0% of reviews — better | 39.8% of reviews |
| Number of ratings | 11 | 36K — better |
| Update frequency | Every 5 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Best chart rank | — | #113 — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 9.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 20 MB | 144 MB |
| Age rating | 4+ | +17 |
| Developer | Neil King | MWM |
Customer experience
Ghostalker
Sincerely
Bugs and requests
Ghostalker
Not enough reviews yet to summarise bugs or requests.
Sincerely
Reported bugs
3 issues- Issues with account creation and login
- Inconsistent behavior when switching between app pages
- Reported messages not being properly removed
Requested features
5 requests- Ability to write more than one letter per day
- Option to receive more letters per day
- Ability to view and respond to past conversations
- In-app chat feature for immediate support
- Customizable notification settings
In-app purchases
Ghostalker
No in-app purchases
Sincerely
- Sincerely Club Monthly$4.991 Month
- Sincerely - Premium3 Days trial$4.997 Days
- Sincerely Club Weekly1 Month trial$7.997 Days
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- Sincerely - Premium3 Days trial2 variants$7.997 Days
- Sincerely Club Monthly$9.991 Month
- Sincerely Club Annual$29.991 Year
- Sincerely Club Annual3 Days trial$29.991 Year
- Sincerely Club Annual3 Days trial$34.991 Year
- Annual Premium Plan3 Days trial$39.991 Year









