Pro Microphone vs Holler
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pro Microphone
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Pro Microphone - Studio Quality Mixer Turn your iPhone or iPad into a live microphone monitor with a built-in studio-style signal chain. Whether you’re rehearsing, hosting, presenting, or just checking how you sound through a speaker or headphones, Pro Microphone routes your voice from the mic to your chosen output with a focus on responsiveness and clarity. Hear yourself, clearly Tap the mic to start. Your voice is processed on the device and played back through the current audio route Bluetooth speaker, AirPods or other headphones, wired earbuds, AirPlay, or the built-in speaker (with smart handling to reduce nasty feedback when you’re on open speakers). Designed for real rooms Live monitoring can cause echo and squealing when the mic picks up the speaker. Pro Microphone includes feedback-aware options so you can start with safer presets or tune things yourself. Adjust Input Gain to control how hot the mic is, and use Volume Boost (200–300%) when you need more level in the room without losing the headroom you need when you’re loud. Shape your tone Dial in Bass, Mid, and Treble with a straightforward studio EQ. Add a light Pop Filter to tame plosives and rumble before the EQ. Choose Echo levels from dry to ambient when you want a bit of space perfect for practice or creative vocal effects. Stay oriented The input meter shows level in dBFS so you can avoid clipping, and status hints help you see how the system is treating latency and routing. If no external speaker or headphones are connected, the app can let you know so you’re not left wondering why everything’s coming from the phone. Bluetooth and daily use Pair your speaker or headset in Settings, then use the app as usual. For the lowest delay, wired headphones are still king; Bluetooth adds some delay by nature of the protocol but the app is tuned to keep the path as snappy as the hardware allows. Thoughtful touches Open How It Works from the help button for a full tour of every control. From the settings menu you can reach support email, privacy policy, and terms. While the mic is active, the display can stay awake so a quick screen lock doesn’t interrupt your session. Privacy-minded Pro Microphone is built around live monitoring: your audio is meant to be heard in the moment, not “stored in the cloud” as part of the core experience described for the app. Permissions are there for microphone (and Bluetooth when the system requires it) so iOS can route audio the way you expect. If you want a pro-style vocal check without a rack of hardware gain, tone, light effects, and flexible output routing Pro Microphone is your pocket studio mixer. Download it and tap the mic to hear yourself the way the room hears you.
Holler
Transform your Sonos speakers into a whole-home intercom system. Broadcast live messages, record and send announcements, or play pre-made sounds across one room or many. It's designed for privacy, working locally on your Wi-Fi without accounts or tracking.
- Whole-home intercom for Sonos
- Live microphone broadcasts
- Record and send announcements
- Play pre-made sounds
- Selectable room grouping
- Restores previous Sonos settings
- Local and private operation
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Turn your Sonos speakers into a whole-home intercom. THREE WAYS TO BE HEARD • Live — start a continuous microphone connection without holding a button • Message — record a short announcement, then send it • Sounds — play ready-made household, attention, and ambience sounds ONE ROOM OR MANY Choose one room, select several rooms, or reach everywhere. Holler temporarily groups compatible rooms so announcements stay synchronized. LEAVES YOUR SONOS SYSTEM THE WAY IT FOUND IT When an announcement ends, Holler restores each room's previous grouping, playback, and volume whenever the speaker makes that state available. LOCAL AND PRIVATE BY DESIGN Holler works directly with speakers on your Wi-Fi. There is no Holler account, advertising, tracking, or Holler-operated audio relay. Remote broadcasting from outside your reachable home network is not supported. Keep Holler open while using Live. If the app leaves the foreground or the microphone is interrupted, Holler stops the broadcast and restores your Sonos system. TRY EVERYTHING All features are available during the seven-day trial. Afterward, one lifetime purchase unlocks Holler permanently—no subscription. Holler requires compatible Sonos speakers on a network your iPhone or iPad can reach. Sonos S1 and S2 systems remain separate and cannot be grouped together. Holler is an independent app and is not affiliated with, endorsed by, or sponsored by Sonos, Inc. Sonos is a trademark of Sonos, Inc. Included alarm and siren sounds are provided for entertainment and attention-getting use only. Holler is not an emergency warning or life-safety system.
Screenshots
Verdict
The clearest difference is in-app purchases: Pro Microphone at none against Holler's 1. On price, ads, device support and iOS requirement 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
Both are free to download. Holler sells 1 one-off in-app purchase. Pro Microphone asks for nothing beyond the download.
| Parameter | Pro Microphone | Holler |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | — | Fortnightly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 4 MB | 5 MB |
| Age rating | 4+ | 9+ |
| Developer | Rahul Gupta | Task One LLC |
In-app purchases
Pro Microphone
No in-app purchases
Holler
- Holler Pro$2.99









