Comparison

OhmPlug vs ImpromptuPost

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

Head to head
About

OhmPlug

Control smart plugs remotely to save energy and add convenience. Automate your home with routines, voice commands, and group devices by room. Earn rewards for energy savings through an optional connected service.

Highlights
  • Remote appliance control
  • Voice control integration
  • Smart home routines
  • Device grouping by room
  • Energy saving alerts
  • Earn rewards for energy savings
Features
Read full description

The official app to control OhmPlug smart plugs, designed to help you save energy while adding convenience to your home. • Easily set up OhmPlug smart plugs using bluetooth and Wi-Fi. • Remotely control appliances from anywhere so you don’t waste energy when you’re out. • Voice control your lights and entertainment.* • Give your OhmPlug a nickname (“air purifier”) that works with voice control.* • Create smart home routines to automate your home.* • Group your OhmPlugs based on which room they are in. • Remotely turn lights on and off while on vacation to increase home security. * Functionality is available via Amazon Echo and Google Home. You must connect your OhmPlug to your Amazon Echo or Google Home accounts. Information may be shared in accordance with OhmConnect’s Privacy Policy at https://www.ohmconnect.com/privacy-policy. You may also use OhmPlug smart plugs to get paid for saving energy in conjunction with OhmConnect, a free service that you can sign up for at ohmconnect.com.* • Set up your OhmConnect account to receive timely alerts when electricity demand is spiking so you can use less when it counts. • Automatically turn off OhmPlugs to save energy and money. • Earn money and gift cards for saving energy during peak usage hours if you sign up for OhmConnect. To get paid for saving energy, sign up for OhmConnect’s demand response program and link your utility account here: ohmconnect.com If you join OhmConnect’s demand response program, your OhmPlug will automatically turn off during OhmConnect energy-savings events for your area unless you program your OhmPlug through the App to remain on or you use your OhmConnect account to opt your OhmPlug out of a specific event.

About

ImpromptuPost

Features
Read full description

Welcome to ImpromptuPost, where thoughtful gestures meet the ease of technology. Our app combines the power of AI with the personal touch of sending physical cards, making it easier than ever to show your friends and loved ones how much you care. Features: AI-Powered Card Creation: Use our intuitive AI tool to generate unique and heartfelt messages. Whether you're lost for words or looking for that perfect phrase, our AI has got you covered. Customizable Templates: Choose from a wide range of beautifully designed templates for every occasion - birthdays, anniversaries, or just because. Personalize your card with photos, stickers, and your own words. Seamless Mailing Service: Once your card is ready, we handle the rest. ImpromptuPost prints, stamps, and mails your card directly to your loved one's doorstep, anywhere in the world. How It Works: Select a Template: Start with a beautifully designed template or create your own. Personalize: Use our AI tool to help craft your message or write your own. Add photos and stickers for a personal touch. Send: Enter the recipient's address, and we'll take care of the printing and mailing. Track: Get notified when your card is printed, shipped, and delivered.

Screenshots

OhmPlug4 screens
ImpromptuPost4 screens

Verdict

The call

The clearest difference is update cadence: ImpromptuPost at every 3 weeks against OhmPlug's every 3 months. On price, ads, 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

OhmPlug ships an update every 3 months, ImpromptuPost every 3 weeks. The most recent releases landed on October 14, 2026 and October 3, 2026 respectively.

Scorecard1 real difference · 9 level
OhmPlug versus ImpromptuPost: the parameters behind the verdict, then further details
ParameterOhmPlugImpromptuPost
PriceFreeFree
Rating4.4 (943 ratings) — better—
Positive reviews21.4% of reviews—
Number of ratings943 — better—
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size86 MB64 MB
Age rating4+4+
DeveloperOhmConnect, IncImpromptuPost LLC

Bugs and requests

OhmPlug

Reported bugs

4 issues
  • Login/password reset issues
  • App crashes when adding devices
  • Devices randomly disconnect from WiFi
  • Incompatible with 5GHz networks

Requested features

4 requests
  • Widget for on/off control
  • Apple HomeKit integration
  • Live power consumption stats
  • Dusk-to-dawn timer setting

ImpromptuPost

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

OhmPlug

No in-app purchases

None

ImpromptuPost

No in-app purchases

Questions

Is OhmPlug free?
OhmPlug is free to download, with no in-app purchases.
Is ImpromptuPost free?
ImpromptuPost is free to download, with no in-app purchases.
Do OhmPlug or ImpromptuPost have ads?
Neither OhmPlug nor ImpromptuPost shows ads.
Which is updated more often, OhmPlug or ImpromptuPost?
OhmPlug ships an update every 3 months, and ImpromptuPost every 3 weeks. Most recently, OhmPlug was updated on October 14, 2026 and ImpromptuPost on October 3, 2026.

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