219+ iOS apps curated and reviewed
Looking for free research meter apps? 15 of our 219+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 4.7★ (210K) | No | No | Aug 2026 |
| 2 |  | Free | 3.8★ (113) | No | No | Jul 2026 |
| 3 |  | Free | 4.6★ (4.9K) | No | Yes | Aug 2026 |
| 4 |  | Free | 4.5★ (14K) | Yes | Yes | Aug 2026 |
| 5 |  | Free | 3.7★ (6) | No | No | Aug 2026 |
| 6 |  | Free | 4.6★ (36K) | No | Yes | Aug 2026 |
| 7 |  | Free | 4.7★ (734) | No | Yes | Aug 2026 |
| 8 |  | Free | 4.6★ (4.5K) | No | Yes | Aug 2026 |
Share your opinions and earn money by completing quick surveys. Get paid up to $1 per survey via PayPal. Surveys are short, often under 20 seconds, and cover various topics like product reviews and location-based satisfaction.
This app allows registered participants in Google's market research programs to interact with physical meters and manage their participation. It simplifies checking in with devices like router meters and offers a convenient way to respond to surveys and policy updates.
This app acts as a professional-grade light meter for plants, measuring PAR, PPFD, DLI, and more using your device's camera. It helps optimize plant lighting by providing accurate readings and in-app guides, with optional advanced features available through purchase.
Transform your device into a versatile toolkit with a comprehensive suite of measuring instruments. This app offers a metronome, stopwatch, timer, ruler, level, and various sensors to assist with a wide range of tasks.
This app enables the creation of robust mobile forms for clinical research data collection. It supports offline data entry, real-time team collaboration, and secure data management with encryption and passcode protection.
Transform your device into a professional sound level meter and audio analyzer. Measure ambient noise, monitor decibel levels, and visualize sound frequencies in real time. It also offers advanced sleep tracking with sound recognition to identify disruptions.
This app provides precise light metering for film photography, eliminating the need for external hardware. It offers various metering modes and customizable profiles to ensure perfect exposures for manual cameras. Advanced features like reciprocity failure correction are available with a PRO plan.
Measure and analyze the sound pressure around you with this app. It provides spectrum frequency analysis and allows you to compare your recordings to a reference chart. Save your measurement history for future reference.
This app functions as a standalone reflective light meter or pairs with hardware for professional flash and color temperature measurements. It offers various modes for photography and videography, storing measurements with notes and location.
This app provides advanced audio measurement capabilities, including sound level metering, frequency analysis, and signal generation. It offers both simple interfaces for daily use and detailed metrics for professional applications, with features compliant with industry standards.
Measure light intensity in lux and foot candles with this 2-in-1 meter. Optimize photography settings, adjust indoor lighting, or prevent eye strain with professional-quality readings directly from your smartphone.
This app functions as a portable light meter, essential for film photographers using manual cameras. It accurately measures reflected light and provides reciprocity calculations for precise exposure control.
Easily capture and annotate object dimensions with photos. Store, organize, and share measurements with detailed comments and multiple detail photos. Ideal for professionals and DIYers needing precise documentation.
Measure lengths and distances in the real world using your device's camera. Supports single line, chained measurements, and perimeter calculations. Customize measurements with different colors.
This app transforms your device into a professional light meter, using AI to analyze live camera previews and provide accurate color temperature readings in Kelvin. It helps photographers and videographers achieve perfect white balance without expensive equipment.
Measure and analyze ambient noise levels with a stylish interface. Capture photos with sound level data, and share or print your findings. Enhance analysis with advanced features like frequency weighting and chart recording through an in-app purchase.
Transform your device into a versatile digital toolkit for precise measurements. Create 2D and 3D floor plans, scan rooms, and measure distances with advanced AI and computer vision. Ideal for DIY projects, home renovations, and professional use.
This professional-grade digital sound level meter measures decibels with advanced modes and filters meeting ANSI Type 1 standards. It allows storing, exporting, and calibrating measurements, and can be used with external calibrated microphones for precise results.
This app provides precise exposure metering for photographers, supporting both digital and analog workflows. It offers a comprehensive set of manual controls and advanced tools like a hyperfocal distance calculator.
Measure environmental noise levels in decibels (dB) with this tool. It helps identify noise pollution, monitor sound levels, and protect your hearing by setting decibel warnings. Record noise, take photos, and create videos of decibel readings.