# 99Labs — Borders & light meter

> Borders & light meter (iPhone/iPad app by 轶雄 张.)

- Source: https://appshunter.io/ios/app/99labs/id6821211491 (this page in markdown: same URL + `.md`)
- Developer: [轶雄 张](https://appshunter.io/developer/6821012959)
- Category: Photo & Video
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 3 MB
- Languages: American English
- Released: 2026-10-28
- Data updated: 2026-10-31

## What is 99Labs?

99Labs is a small, quiet toolbox for photographers. Four tools, one clean design: no accounts, no ads, no tracking.

FRAME
Put a border around your photos and export them ready to share.
• Pick a ratio, border width, border color, corner radius and shadow
• Aspect ratios 1:1, 4:5, 5:4, 3:4, 4:3, 3:2, 2:3, 16:9, 9:16, the original, or your own
• Batch export to Photos
• Every framed photo carries a small 99Labs mark in the bottom-right corner; the optional one-time purchase "Custom watermark" lets you move, resize or replace it

LIGHT METER
Read the light with the camera and get an exposure. Set ISO and aperture, read the shutter speed. Includes the Sunny 16 rule for quick estimates in daylight.

SLICE
Cut a photo into same-size tiles for a multi-image post on Instagram or RED (Xiaohongshu). The most common cut is two tiles side by side, which is the default; one tap gives you the 3 x 3 nine-square grid, or type your own rows and columns (up to 4 x 4) in Custom. Pick the tile ratio (1:1, 4:5 or 3:4), drag each photo to choose the crop, queue several photos, and save every tile to Photos in one go. Swipe through the post and the tiles join back into the original photo.

DARKROOM
A step-by-step timer for developing film at home.
• Templates for black and white, C-41 and E-6; edit, duplicate or build your own
• Each step has a name and a time. Add, reorder and delete steps
• A big countdown in red on black, easy on your eyes and safe for the darkroom. The screen stays on, and a sound tells you when a step ends
• Black and white: enter your tank volume and the dilution (A+B or A:B) to see how much developer and water to mix
• Black and white: set the temperature of the day, and the developer time is converted using the Ilford time/temperature compensation chart. It is a guide; always check your film and developer data sheets

WATERMARK
Import your own transparent PNG, such as a signature or a studio mark, and place it on any slot. Drag, scale and rotate it; it is saved with the slot and drawn in the preview and in every export. Watermarks are part of the optional one-time purchase "Custom watermark". After the purchase, the 99Labs mark becomes a watermark like any other.

PRIVATE BY DESIGN
No account, no ads, no tracking. Your photos never leave your device.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Custom watermark | $0.99 | one-time |


## Is 99Labs safe?

Not enough ratings yet to assess 99Labs.

## Is 99Labs legit?

99Labs has limited verification signals. The AppsHunter Legitimacy Score for 99Labs is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.4 — 2026-10-30

- New: Darkroom, a fourth tool for developing film at home. Build templates for black and white, C-41 and E-6, each with its own steps and times, and count down every step in red on black.
- Black and white: work out how much developer and water to mix for your tank, and adjust the developer time to the temperature of the day using the Ilford time/temperature chart.
- After the Watermark purchase, the 99Labs mark is now a normal watermark: drag, scale and rotate it, or turn it off.

### 1.0 — 2026-10-28

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-31.*