Comparison

AegisSOS vs Stud Finder App

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

AegisSOS

Features
Read full description

Have your words ready when speaking is difficult. Aegis SOS helps you communicate with people nearby, while traveling or when asking for help. SHOW IT OR TYPE IT Use large text cards with adjustable size and contrast, and rotate the card to face the other person. Take turns typing in a temporary conversation. KEEP PHRASES CLOSE Create, edit, categorize, search and pin phrases. Import or export phrase backups. Text cards and saved phrases work offline; spoken playback needs a suitable system voice available on the device. CHOOSE SPEECH OR LIGHT Read text with iOS voices and adjust the speaking rate and volume. Use built-in SOS light signals, steady screen light or a slow pulse. Voice and torch availability depend on the device and system settings. Flashing light may affect people sensitive to it. REVIEW BEFORE SHARING Type an address or request one location fix; there is no background tracking. Save up to five contacts. Edit and preview your message before copying it, choosing a sharing app or opening the SMS composer. You confirm sending yourself; SMS requires a compatible device. ONE-TIME ADVANCED TOOLS Core cards, conversations, phrases, speech, standard SOS, screen light and sharing tools are free. A one-time in-app purchase unlocks custom flash rhythms and text-to-Morse for A-Z, digits and supported symbols. Restore purchases in the app. No subscription. No account is required. Temporary conversations are not saved to history or uploaded. The interface includes 50 language and regional variants, with layouts for iPhone, iPad and supported Duo folding states. Aegis SOS is a communication aid. It does not automatically call emergency services, send messages or dispatch rescue. It cannot replace local emergency services. Speech and light can be interrupted and attention from others is not guaranteed. Privacy Policy: https://chenyao6134.github.io/privacy-policy-en.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Stud Finder App

This tool uses your phone's magnetometer to detect metal objects within walls, such as nails, screws, pipes, and rebar. It offers different modes for finding studs or larger metal objects and can even overlay stud locations on your camera view in augmented reality.

Highlights
  • Magnetometer-based stud and metal detection
  • Multiple scan modes (Stud, Metal, Deep Scan Pro)
  • Augmented reality wall view (Pro)
  • Haptic and sound alerts
  • Live field strength readings
  • Calibration to your environment
  • Save and review past scans
Features
Read full description

Find the stud before you drill. Stud Finder turns your iPhone's built-in magnetometer into a magnetic stud finder. It picks up the steel nails and screws that hold drywall to the studs, and warns you about the pipes, rebar and conduit you don't want to hit. Lay your phone flat on the wall, let it calibrate, then slide it slowly. The gauge climbs as you get closer to metal, and the scanner lights up, beeps and buzzes when it finds something. THREE SCAN MODES Stud Mode: Tuned for the small, brief signal of a nail or screw. Follow the line of fasteners to find the stud. Metal Mode: Less sensitive, so only larger metal like pipes, plates and steel studs stands out. A line of nails won't set it off, so you can tell a fastener from a pipe. Deep Scan (Pro): The most sensitive mode, for fasteners set deeper in the wall that Stud Mode can pass right over. WALL VIEW (PRO) Found one stud? Point your camera at the wall and Wall View draws a line on it in AR, then marks where the next studs should be at your stud spacing: 16 or 24 inches, or 40 or 60 cm. Slide your phone onto a predicted line to check it, and tap to confirm. Predicted lines are estimates. Doubled studs around doors, windows and corners can break the pattern, so check each one with the scanner before you drill. FEATURES • Calibrates against your own wall, so readings fit the room • Live field strength in microtesla (µT) or milligauss (mG) • Low, normal and high sensitivity • Haptic and sound alerts: one beep for a possible stud, three for metal • Save scans and look back at them later • Keep the screen awake while you scan • A step-by-step guide that walks you through hanging a shelf, from the first stud to the last screw • Available in 13 languages FREE AND PRO Stud Mode, Metal Mode and calibration are free. The free plan includes 3 scans of up to a minute each. After that, watch a short ad for another scan, as often as you like. You can keep up to 5 saved scans. Stud Finder Pro adds: • Deep Scan • Wall View • Unlimited scans with no time limit and no ads • Unlimited saved scans If your plan starts with a free trial, we'll remind you two days before it ends. HOW IT WORKS, AND WHAT IT CAN'T DO We want you to know exactly what you're getting. Your phone's magnetometer senses magnetic fields, so it detects ferrous metal: steel nails, screws, pipes, rebar and conduit. Wood isn't magnetic, and no phone can detect it directly. Stud Finder finds studs the way a magnetic stud finder does, by finding the metal fasteners holding them in place. That's why the app reports what it finds by signal strength instead of claiming to identify materials. If a reading in Stud Mode is unusually strong, it tells you it's likely metal rather than a stud. Results depend on your device's magnetometer, the wall material and how deep the metal is. Detection is less reliable through thick plaster, tile, concrete or metal lath. Always check before you drill, and never rely on any app alone where there may be electrical wiring or plumbing. SUBSCRIPTIONS Payment is charged to your Apple ID when you confirm your purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. You can manage or cancel them in your App Store account settings. PRIVACY Your saved scans are stored on your device. Privacy Policy: https://redizeuz.com/privacy Terms of Use: https://redizeuz.com/terms

Screenshots

AegisSOS4 screens
Stud Finder App4 screens

Verdict

The call

The clearest difference is ads: AegisSOS at none against Stud Finder App's shown. On price, update cadence, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. AegisSOS sells 1 one-off in-app purchase and Stud Finder App sells 2 in-app purchases, starting at $9.99 per year. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 25, 2026 and November 6, 2026 respectively.

Scorecard1 real difference · 9 level
AegisSOS versus Stud Finder App: the parameters behind the verdict, then further details
ParameterAegisSOSStud Finder App
PriceFreeFree
Rating—4.4 (5 ratings) — better
Positive reviews—80.0% of reviews
Number of ratings—5 — better
Update frequencyEvery 2 monthsEvery 2 months
AdsNo — betterYes
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better17.6
Further details — not scored
Size12 MB20 MB
Age rating4+4+
Developer耀 陈Ebenezer Oteng

In-app purchases

1 purchases

AegisSOS

One-time1
  • Advanced Tools – Lifetime$0.99
2 purchases

Stud Finder App

Subscriptions1
  • Yearly$9.991 Year
One-time1
  • Lifetime$7.99

Questions

Is AegisSOS free?
AegisSOS is free to download, with in-app purchases available.
Is Stud Finder App free?
Stud Finder App is free to download, with in-app purchases available.
Do AegisSOS or Stud Finder App have ads?
Stud Finder App shows ads; AegisSOS does not.
Which is updated more often, AegisSOS or Stud Finder App?
AegisSOS ships an update every 2 months, and Stud Finder App every 2 months. Most recently, AegisSOS was updated on October 25, 2026 and Stud Finder App on November 6, 2026.

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