TestBox: QR Code & Barcode
Scanner, Generator, UUID, Hash
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Ten tools for the things you build and convert every day in testing and development.
Whatever you type stays on your device. Every generator and converter runs entirely on-device.
■ Ten tools
・QR code / barcode scanner
Hand the scanned result straight to another tool. The last 20 scans stay on your device.
・QR code generator
Choose the error correction level (L / M / Q / H) and the size.
・Barcode generator
CODE128 and JAN / EAN, with the check digit calculated for you.
・Random strings
Up to 65,535 characters. Pick the character sets, and optionally drop look-alike
characters such as 0 and O, or 1 and l.
・UUID generator
v1 / v3 / v4 / v5 / v7. v3 and v5 take a namespace and an input string.
・URL encode / decode
Both RFC 3986 and form-urlencoded. Failed decodes tell you exactly what went wrong.
・Base64 encode / decode
Standard, unpadded, URL-safe and MIME variants. File input up to 50 MB.
・Hash generator
MD5 / SHA-1 / SHA-256 / SHA-384 / SHA-512.
・Time zone converter
Time zone conversion, UNIX timestamps, Japanese era dates and ISO 8601 on one screen.
・Dummy image generator
PNG / JPEG / GIF / BMP / TIFF / HEIC / SVG / WebP / AVIF, up to 4096 x 4096 px.
Set the background colour, one of nine patterns, transparency, a border, and text
with six typefaces, nine positions and effects.
■ Generate in batches
Random strings, UUIDs, hashes and the encoders all take many items at once.
Copy the whole result, or export it as CSV.
■ Pass a result to the next tool
Scan a QR code and URL-encode it. Hash the number from a barcode.
Results move from tool to tool without a round trip through the clipboard.
■ Nothing leaves your device
Pasting a production token or customer data into a web-based converter is against
the rules at most workplaces. Everything in TestBox runs on-device, so what you type
is never sent over the network.
■ TestBox Pro
・No ads
・Batches of up to 500 at a time (free: 15 per run after a rewarded ad, twice a day)
・No ad before saving a dummy image
■ About the subscription
・TestBox Pro, monthly or yearly
・250 JPY per month / 1,800 JPY per year (prices vary by region)
・Payment is charged to your Apple ID account at confirmation of purchase.
・The subscription renews automatically unless auto-renew is turned off at least
24 hours before the end of the current period.
・The renewal is charged within 24 hours before the end of the current period.
・You can manage or cancel the subscription in your App Store account settings.
・Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
・Privacy Policy: https://twilight-gambler-281.notion.site/Privacy-Policy-3d58126a5b98807993aaf9b417257639
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Souhei Takashi, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Souhei Takashi
- Size
- 9.5 MB
- Category
- Developer Tools
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- TestBox Pro Yearly $9.99
- TestBox Pro Monthly $1.99
- Copyright
- © 2026 Souhei Takashi. All Rights Reserved.
