VOLDT vs Letter Explainer
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
VOLDT
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VOLDT, easily build a cloud intelligent life 1. Remote control, convenient, open anytime, anywhere 2. Multiple devices can be added at the same time to achieve a single APP to control all smart devices 3. Flexibly set scheduled tasks and execute them on time and accurately 4. One click to share the device, the whole family can easily enjoy the smart life 5. Fast Internet connection, no waiting, enjoy the fast experience
Letter Explainer
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Got an official letter and only understand half of it? Postklar explains it in plain words - in your language. HOW IT WORKS β’ Take a photo of the letter or open a PDF β’ Postklar reads it and explains it in 2-3 simple sentences β’ You see right away what to do, by when, and how much WHAT POSTKLAR DOES β’ Finds deadlines - even in the legal notice - and adds them to your calendar β’ Copy amounts, IBANs and reference numbers with one tap β’ Every number is checked against the letter; anything uncertain is flagged β’ Ask questions about the letter: βWhat happens if I donβt pay?β β’ Draft a reply: objection, payment plan, extension β’ Tells you when to get professional help - with links to free advice services YOUR DIGITAL FILING CABINET Every letter is filed automatically by sender: tax office, job centre, health insurer, landlordβ¦ Searchable, exportable as PDF and synced across your devices with iCloud. IN YOUR LANGUAGE Explanations in English, German, Russian, Ukrainian, Arabic, Turkish, Polish and Spanish. PRIVACY β’ Your letters are never stored on our servers and never used for AI training β’ Private mode: analysis only on your iPhone β’ No account, no email needed PRICING 3 letters free. Then Postklar Pro (monthly or yearly, up to 6 family members) or a pack of 5 letters. Postklar explains letters; it is not legal advice. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: VOLDT at none against Letter Explainer's 3. VOLDT also leads on iOS requirement (14.0 vs 17.0). Letter Explainer's advantage is update cadence (every 4 days vs every 11 months). On price, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Letter Explainer sells 3 in-app purchases, starting at $3.99 per month. VOLDT asks for nothing beyond the download.
VOLDT ships an update every 11 months, Letter Explainer every 4 days. The most recent releases landed on October 4, 2026 and October 19, 2026 respectively.
| Parameter | VOLDT | Letter Explainer |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 11 months | Every 4 days β better |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPod β better | iPhone |
| Requires iOS | 14.0 β better | 17.0 |
| Further details β not scored | ||
| Size | 173 MB | 21 MB |
| Age rating | 12+ | 4+ |
| Developer | Voldt B.V. | Armen Ter-Oganezov |
In-app purchases
VOLDT
No in-app purchases
Letter Explainer
- Postklar Pro Monthly$3.991 Month
- Postklar Pro Yearly$24.991 Year
- 5 Scans$2.99









